International Women in Engineering Day

Boston Herald June 7, 1945

“These Engineers Wear Lipstick!” How’s that for a cringeworthy headline? Just one example of the hurdles women in engineering have had to overcome to be taken seriously in their profession.

In the 21st century, it is not at all unusual to find women engaged in all fields of engineering – civil, military, chemical, aerospace, computer, electrical, mechanical, nuclear, and more. But it wasn’t always that way. Prior to World War II, women in this field were a rarity.

In the 19th century, women who performed engineering work often had academic training in mathematics or science, although many of them were still not eligible to graduate with a degree in engineering. For instance, Tabitha Babbitt (1784—1853?) was a toolmaker and inventor living in the Shaker community in Harvard, Massachusetts. Babbitt is purported to have invented, in 1813, the first circular saw for use in a sawmill. There is some dispute over the accuracy of this “fact”: some believe it was patented by others when they found out about her invention, others say that saw was invented at the Mt. Lebanon Shaker village. Babbitt does share the invention of cut nails with Eli Whitney and is credited for inventing a process for manufacturing false teeth.

PIONEERS IN WOMEN ENGINEERING IN CAMBRIDGE

This piece focuses on women engineers in Cambridge. But we can’t talk about women engineers in Cambridge without first talking about the Institute of Technology– which was first located on Boyleston St. in Boston. William Barton Rogers (1804-1882) had been a professor of “natural philosophy” and chemistry at the College of William and Mary and had also worked on the first geological survey of the state of Virginia. Rogers moved to Boston in 1853 and hatched his idea of a “new polytechnic institute.” MIT was founded in 1861 and its first classes began in 1865. Even before the Institute of Technology moved from Boston to Cambridge in 1916, it was the place to go if one planned to study engineering.

Photochrom print of the Rogers Building, the first building of the Massachusetts Institute of Technology (original photo: 1889; Photochrom: 1901) via Wikimedia Commons

ELLEN SWALLOW RICHARDS (1842-1911)

The first woman to graduate from MIT with an engineering degree was Ellen Swallow Richards. She was admitted as a special student at MIT by vote of the faculty in 1870, the same year that she received her A.B. from Vassar.

Portrait of Ellen Swallow Richards. Image courtesy of MIT Archives

Her special student status at MIT did not, however “establish a precedent for the general admission of females.” (https://archivesspace.mit.edu/agents/people/975). Swallow later applied for formal admission to MIT and in 1873 she earned a B. S. in Science (chemistry)—the same year that she also earned an M. S. of Arts from Vassar. Her thesis for MIT was titled “Notes on Some Sulpharsenites and Sulphantimonites from Colorado.” Impressive. Two years later, in 1875, she married the chairman of the MIT Mine Engineering Department, Robert Hallowell Richards (1844–1945).

It appears that the main reason for excluding women from studying at MIT was the lack of laboratory space and residential accommodations. By 1876, Swallow had raised enough money for the creation of the MIT Woman’s Laboratory, “established to afford better opportunities for the scientific education of women” (Technology Review, June 1910). Swallows Richards had a long and illustrious career at MIT, as Instructor in Chemistry and Mineralogy and, for 27 years, as an Instructor in Sanitary Chemistry. Her work in sanitary engineering led to the development of the field of home economics, which she is credited as having founded. She was a consultant in chemistry and a water analyst for the Massachusetts State Board of Health, the nutrition expert for the U. S. Department of Agriculture, and co- founded (with Marion Talbot, class of 1888) of the American Association of University Women.  

Ellen Swallow Richards (upper left). Image via Interactive Timeline: Women at MIT

Between 1881 and 1890, more than 100 women enrolled at MIT, and 19 earned S. B. degrees. However, the U. S. lagged behind other countries in graduating women engineers: a 1909 article in the Boston Sunday Herald (March 28) pointed out that Russia was far ahead of the U. S. in this statistic. That same year, at least 40 women qualified as engineers from the St. Petersburg Higher Technical College program.

Women encompassed around 1% of the student body at MIT until the arrival of WWII. By 2023, legions of women engineers have graduated from MIT (see below). Those mentioned here are just a small representative handful of successful women in engineering. Among those prominent engineers following in Ellen Swallow Richards footsteps were:

EDITH CLARK (1883-1959) M.S. MIT 1919

Edith Clark was the first women to earn a Master’s degree in electrical engineering from MIT and the first woman to hold a professional position as an electrical engineer in the U. S. She worked at General Electric, as a Professor of Physics at the Constantinople Women’s College in Turkey, and became the first female professor of engineering at the University of Texas. Clark invented the “graphical calculator, which solved problems with electric power transmission of data.” It was patented in 1925. Edith Clark holds the distinction of being the first woman to present a paper to the American Institute of Electrical Engineers.

To quote Clarke: “There is no demand for women engineers, as such, as there are for women doctors; but there’s always a demand for anyone who can do a good piece of work.”  

LYDIA GOULD WELD (1878-1962)

Portrait of Lydia Gould Weld via The Mariners’ Museum and Park (Accession# P0001.016-01-PP1539)

Lydia Gould Weld attended MIT from 1898 to 1903 and earned the S.B. in Naval Architecture and Marine Engineering. Weld was the first woman to earn an engineering degree from MIT and later became the second woman member of the American Society of Mechanical Engineers.

Even as women progressed in engineering in the early 20th century, they still experienced many of the same roadblocks that impeded their progress in the late 19th century, as the Boston Herald pointed out on July 1, 1928:

WWII AND THE NEED FOR ENGINEERS

With men leaving engineering jobs for the armed forces, World War II provided new opportunities for women in engineering. In fact, the need for engineers was urgent. All the same, newspaper reporting on the phenomenon of women engineers continued to express concern that women were “taking over jobs held by men.”

Cambridge Sentinel September 26, 1942 (excerpts)
Boston Traveler January 14, 1943 (excerpt)

The number of women engineers graduating from MIT in Cambridge post WWII is too numerous to list in detail. This year, in 2022–2023, women at MIT account for 48% of undergraduates (2,244) and 39% of graduate students (2,830). Those below are just a sample of women engineers with an association with Cambridge:

MILDRED DRESSELHAUS (1930-2017), “The Queen of Carbon”  

Mildren Dresselhaus. Image: Courtesy of the National Science Foundation

After graduating from Hunter College (1951), Dresselhaus spent a year as a Fulbright Scholar and later earned her Ph.D. at the University of Chicago. In 1967, she was appointed to the MIT faculty of Electrical Engineering and Computer science. In 1983, she was also appointed to the Faculty of the Physics Department. Two years later, she received MIT’s highest honor and was named Institute Professor (1985). She was also the first woman to win a National Medal of Science in engineering. Her research and teaching focused on magneto-optics, the structure of carbon, carbon nanotubes, and graphene.

SHEILA WIDNALL (1938-)

Portrait of US Secretary of the Air Force Sheila E. Widnall via Wikipedia

Sheila Widnall majored in Aeronautics and Astronautics at MIT, receiving her B.S. (1960), her M.S. (1961), and her Ph.D. (1964) in that field. Her research focused on “fluid mechanics and the aerodynamics of high speed vehicles.” In 1979, she was the first woman appointed to the faculty of the MIT School of Engineering. She was also the first woman to serve as Secretary of the Air Force having been appointed by President Clinton, a position she served in from 1993-1997. Afterwards, she served as Associate Provost of MIT, and was ultimately appointed Institute Professor Emerita. Her awards, positions, and achievements are too numerous to list. Widnall was inducted into the National Women’s Hall of Fame in 2003. 

SHIRLEY ANN JACKSON (1946-)

Jackson was one of the first black women to receive her B.S. in theoretical physics from MIT (1968). In 1973, she was the first African American woman to receive a doctorate from MIT, and the second nationwide to receive a doctorate in nuclear physics.

Shirley Jackson at MIT the year she earned her PhD in physics, 1973. Image via MIT Black History, courtesy MIT Museum

In 1995, President Clinton appointed Jackson as Chairwoman of the U. S. Nuclear Regulatory Commission. In 1999, she became the 18th President of Rensselaer Polytechnic Institute.

MARGARET HAMILTON (1936-)

Hamilton received her BA in mathematics with a minor in philosophy in from Earlham College in 1958. Moving to Cambridge with her husband (James Cox Hamilton) in 1960, she joined MIT’s Lincoln Laboratory. She then moved on to MIT’s Instrumentation Lab (now the independent Draper Lab) where she was the director of the Software Engineering Division. In 1961, the lab contracted with NASA “to develop the Apollo program’s guidance system. For her work during this period, Hamilton has been credited with popularizing the concept of software engineering.”  (https://solarsystem.nasa.gov/)

Computer scientist Margaret Hamilton poses with the Apollo guidance software she and her team developed at MIT. Credit: Courtesy MIT Museum

The national Society of Women Engineers was founded in 1950. But it wasn’t until 1963, with the opening of MIT’s McCormick Hall, that women finally had a dormitory on the Cambridge campus. 

Today’s post was written by CHC volunteer, Kathleen M. Fox.


SOURCES

https://alum.mit.edu/slice/first-female-engineer-inducted-inventors-hall-fame

https://blog.isa.org/mechanical-engineering

https://www.britannica.com/

Cambridge Public Library’s Historic Cambridge Newspaper Collection

Genealogybank

https://innovation.mit.edu/interactive-timeline-women-at-mit/

Newspapers.com

https://www.nsf.gov/news/special_reports/medalofscience50/dresselhaus.jsp

https://prabook.com/web/tabitha.babbitt/1837435

https://www.smithsonianmag.com/

https://solarsystem.nasa.gov/

Technology Review June 1911, MIT Archives and Special Collections (p 368)

Wikipedia

The Women of M.I.T., 1871 to 1941: Who They Were, What They Achieved by Marilynn Arsey Bever ’76 (MIT 1976)

Let’s Sell Some Time: The Harvard College Observatory, Now Part of the Center for Astrophysics | Harvard & Smithsonian

THE COMET AND PLANET BUSINESS. – Are not our scientific friends in Harvard, and elsewhere, carrying this planet and comet business rather too far? A new planet in the course of three or four years, and a comet a year, will do very well, but this finding a planet every week, and a new comet daily – is it not running the thing into the ground?…   (Reprint from the Providence Journal in the Cambridge Chronicle May 29, 1852.)

Selling time? Huh? Read on. To celebrate International Astronomy Day on April 29, we’re taking a brief look at the Harvard College Observatory. Volumes have been written about the Observatory and its scientific achievements, so this post will focus on the beginning years.

It turns out that an observatory is useful for a lot more than just looking for stars in outer space: observatories are crucial to finding your way around down here on Earth, too. As it says on the Smithsonian Institution website: “If you want to know where you are, you need a reliable clock.”[i] But what does that have to do with “selling time?”

HUV 1210 (1-2b) Astronomical observatory [Harvard College Observatory, exterior, photograph], 1865

In the early 1800s, Europe was far ahead of the U. S. in terms of astronomical research—just think of Copernicus or Galileo. By 1825, Europe was home to at least 130 observatories.[ii] Although faculty at Harvard had begun thinking about building an observatory as early as 1805, it was not until 1815 that the Harvard Corporation voted to “consider upon the subject of an Observatory.” It took another 14 years for this expensive project to emerge. In 1839, the first iteration of the Observatory was organized on the grounds of the Dana House on Quincy Street in Cambridge, near the present-day Houghton Library. The Dana House was moved in 1947 across the street to its current location at #16 Quincy St.

The Dana-Palmer House (built 1822) showing lantern that was once used for astronomical viewing (no date). Harvard Plate Stacks, photo HCO-PHO-078.004

That same year, the most local reliable timekeeper was William Cranch Bond (1789-1859), a well-known clockmaker and an amateur astronomer. Harvard was happy to accept Bond’s offer of his own private equipment for the first observatory. Bond’s marine chronometer (the scientific name for a very precise time-measuring device used to determine longitude at sea) was so accurate that it was used by the U. S. Navy. Bond was subsequently appointed the first “Astronomical Observer to the University”—then, a position without pay. At the time, the observatory was referred to in the press as the “Cambridge Observatory.” In 1847, Bond was appointed as the first director of the observatory at its new location at 60 Garden Street.

Columbian Sentinel January 1, 1820
William Cranch Bond. Image: Harvard University

(William Cranch Bond is buried in Mount Auburn Cemetery, Lot 1814 Geranium Path)

A second building, erected to house the Lloyd Magnetic apparatus for measuring the meridian, had to be built near the Dana House. To do so, the College had to “purchase the privilege of tunneling under a neighboring building in order to procure a sight of the meridian mark.” The building was constructed with no use of iron, which would have distorted magnetic readings. A concurrent development was taking place in Europe, the use of which would affect the work of astronomers across the globe: in 1839, Louis Daguerre invented the daguerreotype, which enabled the scientists at the Observatory to capture images of astronomical sightings, rather than drawing them by hand. 

The Unknown Comet that Changed Everything

In 1843, a previously unknown comet seen by the naked eye zoomed into view, generating immense interest among the population:

Boston Daily Mail March 10, 1843 
The Bee [Boston] March 9, 1843

Harvard seized the opportunity created by the comet craze to launch a fundraising campaign to acquire high quality instruments and a more suitable location for the Observatory. So it was that in 1843, ground was broken for the Observatory on what was then known as “Summer House Hill” at its current location, 60 Garden Street. Meanwhile, orders were being placed in Europe for the best telescopes and instruments, including what would become the largest telescope in the United States—The Great Refractor.

Detail: 1854 Walling map

By 1847, the observatory was up and running. The building was oriented to North/South for the purpose of celestial measurements, (rather than parallel to the street), and made earthquake proof. The telescope’s granite base extends 26 feet below ground and is 43 feet high from the ground up. Most spectacularly, the glass lens, shipped from Germany, was installed on top of the gargantuan base—known the Sears Tower, named for Boston philanthropist David Sears, who was a major player in raising money for the new observatory in 1839.

1848 Great Refractor Lithograph by B. F. Nutting and A. Sonrel, https://hea-www.harvard.edu/~fine/Observatory/newest.html

The crush of visitors to the telescope (at no charge) was so huge such that director Bond wrote to the President of the University (Edward Everett) to reverse the university’s policy of open visitation:

“…the number of visitors has been constantly on the increase for several weeks.  On the last public evening there were probably four hundred persons present. These crowded into a space of thirty feet in diameter, the mass rapidly condensing near the point of observation, rendered the management of an instrument of several tons weight, and so nicely balanced as to be turned by a finger, extremely hazardous; while from the quick succession in which the observers were obliged to follow each other, affording perhaps upon an average of a quarter of a minute to each one, it was impossible that any individual could derive much instruction.” (The Cambridge Chronicle October 28, 1847). Bond was also concerned about the amount of dust raised by all those visitors tramping over the floorboards infiltrating the delicate mechanism.

In addition to the Great Refractor dome, rooms for other magnetic equipment needed to be built. These included the equatorial room, the transit circle room, the prime-vertical room, and locations for the meridian-transit instrument, the horizontal-force magnetometer, the declination magnetometer, the reading telescopes, the small altitude and azimuth instrument, the transit (or sidereal) clock—got that? Once again, these spaces were constructed using no iron.

Once the Great Refractor was installed, scientists began taking photographs. Photographs taken at the observatory greatly amplified the knowledge of stars, planets, and constellations. In 1849photographer John A. Whipple (1822-1891) took a daguerreotype of the moon on Harvard’s Great Refractor (shown below). This image won Whipple a gold medal at the Crystal Palace exposition in London in 1851.

John Adams Whipple and Harvard’s Great Refractor. Image https://www.themarginalian.org/

After photographic means were further developed, the observatory began creating negatives on glass plates measuring 8” x 10”. By 1893, the number of glass plates amounted to 30,000 and in total weighed nearly eight tons!  

Below is an example of a glass plate negative. The three big circles are the constellation Orion’s Belt. See all those little dots that look like dust? Those are also stars or constellations. It was all hands on deck to find people to analyze and catalogue each dot.  And those people were women.

Image: Astronomical Photographic Glass Plate Collection, Center for Astrophysics | Harvard & Smithsonian

The women were called “computers.” Hired by the observatory beginning in 1875, the computers were paid 25-30 cents/hour and worked six days a week. The pioneer of this cohort seems to be Miss. Rhoda G. Saunders, who was hired for $600 per year in 1875, and worked at the Observatory until 1888, when she got married. Saunders first appeared listed as a “computer” in the Cambridge City Directory of 1877:

The image of a broken glass plate below illustrates how fragile the plates were, as well as the identification numbers added by the “computers.”

Repaired glass plate negative. Image by Kathleen Fox

The next image shows how the glass plates were historically stored when not in use—each in its own annotated file on the shelves. Also seen to the left of the shelving stacks is a group photo of the women computers:

Glass plate stacks: Image: Kathleen Fox
[Observatory computer room and staff], 1891. Harvard University Archives / HUV 1210 (9-4). Harvard Libraries. The women and their tools were staged for the photograph.

Hiring women for scientific work was such big news that it made it as far as a newspaper in Wisconsin:  

Image: the Wisconsin State Journal, January 24, 1882

Click here for a list of women astronomical computers at Harvard.

By 1893, the Observatory needed new storage space for all the glass plates. By running a pulley along a rope to the storage site in a new building, they managed to move all the plates without breaking one. The rate of transfer was about 6,000 plates per hour. Today, there are over 500,500 glass plate negatives of photographs of stars, planets, and constellations in the Astronomical Photographic Plate collection.

FUN FACTS ABOUT THE HARVARD-SMITHSONIAN OBSERVATORY

– Observatory Hill.  Once the Observatory was relocated to Garden Street, people began referring to the area in general as “Observatory Hill.”  In 1895, the Cambridge Chronicle established a regular column titled “Observatory Hill” to relay the goings on in the neighborhood.

Selling time. How can one sell time? Turns out it was big business. The proliferation of railroad companies, each running their trains on separate timetables, created dangerous problems. Once again, our hero William C. Bond came to the rescue. Bond and his sons developed a prototype for transmitting accurate time measurements they called the “Spring Governor.”  By 1851, the Bond family had perfected the technology and were able to send electronic signals from the clocks in the Cambridge Observatory to clocks in Boston through telegraph wires. The railroads were interested, and soon Harvard was “selling time”—in other words the Bonds sold rights to use their time system. Harvard made about $2,400 per year with the enterprise until the U. S. Naval Observatory took over time standardization.

– Outpost observatories Thanks to a large donation in 1890, Harvard was able to set up an observatory station in Arequipa, Peru. It was named the Boyden station, after Uriah Boyden, a Boston civil and mechanical engineer, and the inventor of the Boyden turbine. In 1926/27 the Boyden station in Arequipa was moved to Bloemfontein South Africa.  

The Smithsonian connection. In 1955, the Smithsonian Astrophysical Observatory relocated to Cambridge, and in 1973 the Smithsonian and Harvard Observatories combined, forming The Center for Astrophysics | Harvard & Smithsonian.

The end of glass plate negatives. By 1992, advanced technology had made glass plate negatives obsolete, and the program was shut down.

We leave you with these somewhat hokey astronomical jokes:

“It is said that in space, no one can hear you laugh. That explains the silence.”

“The rotation of the earth makes my day.”

“What did Mars say to Saturn? Give me a ring sometime.”

Image: View of Harvard College Observatory 1893-1930.

Photographer unknown. Harvard Plate Stacks Collection

Today’s post was written by CHC volunteer Kathleen M. Fox.


SOURCES

Robert Sears. A Pictorial Description of the United States. 1852

Selling the True Time: Nineteenth Century Timekeeping in America. Ian R. Bartky. Stanford University Press, $57.95 (328pp) ISBN 978-0-8047-3874-3.

https://www.harvardmagazine.com/2015/08/william-cranch-bond.  Issues September-October 2015, by Alan Hirshfeld

https://library.cfa.harvard.edu/plate-stacks/collection-timeline

https://library.cfa.harvard.edu/plate-stacks/women-at-hco

https://library.cfa.harvard.edu/rhoda-g-saunders

Harvard Crimson February 16, 2017 by VALERIE B. ELEFANTE

Harvard Crimson https://www.thecrimson.com/article/1947

https://oceanservice.noaa.gov/

https://www.britannica.com/biography/William-Cranch-Bond

https://www.gutenberg.org/

https://www.scientificamerican.com/article/a-chronicle-of-timekeeping-2006-02/


[i] https://timeandnavigation.si.edu/

[ii] https://www.harvardmagazine.com/2015/08/william-cranch-bond