Professor Ensmenger

The History of Women in Engineering

January 31, 2017     #teaching

This week in my graduate seminar on Technology & Gender, we will be discussing Ruth Oldenziel’s Making Technology Masculine: Men, Women and Modern Machines in America, 1870-1945. As a complement to that discussion, we will be analyzing a remarkable set of primary source documents on the history of women in technology. The documents are a series of letters exchanged between the presidents of various engineering schools in the United States in the fall of 1917, and are part of one of my favorite stories about the importance of serendipitous discovery in historical research.

In the spring of 2005 I was a relatively new faculty member in the History & Sociology of Science department at the University of Pennsylvania, and had just finished teaching an undergraduate survey course on the history of technology. One of the topics we covered was the history of women in engineering.

A few weeks after the end of the semester one of my most excellent students, a Penn undergraduate named Joan Lee, came to my office with a collection of documents she had found in a dumpster. Joan was teaching in a summer program aimed a teaching girls and boys about science and technology, and went looking for some waste paper out of which to construct paper airplanes. What she found was a set of letters to and from John Frazer, the then dean of the Towne Scientific School at the University of Pennsylvania. In early November 1917, Frazer had written to the deans or presidents of all of major engineering or technical colleges in the United States, asking them about their policies on admitting women to their programs. The responses came from Stanford, Cornell, Dartmouth, Johns Hopkins, Wellesley, Berkeley, University of Michigan, University of Illinois, Washington University of St. Louis, Case Western, Brooklyn Polytechnic, Tulane, University of Virginia, Georgia Tech, and the Stevens Institute of Technology. The results are fascinating and, in some cases, surprising.

At the time, Penn was touting its (relatively) long and admirable history of admitting women. Sadly, the tragic conclusion of this chain of letters shows that this was not true of its engineering departments. But in any case, what a remarkable opportunity for a history of science student to experience, as an undergraduate, the challenges and pleasures of doing historical research.

You can find the document collection here. Be sure to read the final two letters, which bring the episode through to its sad conclusion in 1921. Then go read Oldenziel’s book, because although these letters provide excellent insight into what the Deans of engineering schools thought about the role of women in engineering at the turn of the 20th century, they are a terrible reflection of the actual presence of women in engineering in this period.

Technology and Gender

January 09, 2017     #teaching

For the spring 2017 semester I will be offering a new graduate seminar that explores the intersection of technology and gender. In part this will develop my long-term interest in the history of women in computing, but will also include the emerging literature on masculinity and computing and queer computing.

The syllabus for the course can be found here, but I have also made public a Github repository that includes an extensive bibliography. Feel free to clone or fork. I would like this to be maintained and extended to serve as a useful resource for other scholars and students working in this field.

In addition, you might find useful this list of women and gender non-conforming people writing about technology.

The Multiple Meanings of a Flowchart

July 31, 2016     #publications

From the very earliest days of electronic computing, flowcharts have been used to represent the conceptual structure of complex software systems. In much of the literature on software development, the flowchart serves as the central design document around which systems analysts, computer programmers, and end users communicate, negotiate, and represent complexity. And yet the meaning of any particular flowchart was often highly contested, and the apparent specificity of such design documents rarely reflected reality. Flowcharts were rarely “true, ” but they were nevertheless useful. In the latest issue of the journal Information & Culture, I explore the “Multiple Meanings of the Flowchart”.

For those of you without access to the Project Muse academic database, you can find an earlier draft version of the paper for free online here.

History of Computer Dating

July 23, 2016     #media

University Trustee Teaching Award

April 28, 2016     #teaching

I am pleased and honored to have been awarded the 2015-2016 Indiana University Trustees Teaching Award. Many thanks to my students, teaching assistants, and colleagues who helped make this possible!

SHIFT-CTRL at Stanford

April 20, 2016     #research #media

In early May I will speaking at the SHIFT-CTRL conference at Stanford University. The conference, which is being convened by Tom Mullaney and Ben Allen is aimed at exploring new directions in scholarship on computing and new media that “engages meaningfully with questions of gender, culture, language, ethnicity, and class.” The scholarly line-up that they have arranged is impressive. This is an exciting way to end the spring conference season. I will be presenting on my global environmental history of computing project.

The Dirty Bits Traveling Show

April 11, 2016     #research #media

The Art of Software Maintenance

April 05, 2016     #research #media

It often surprises my students when I tell them that as much as 60-80% of all software development effort (time and money) goes into software maintenance. After all, software is not a technology that we think of as “breaking down” — at least in the conventional sense of wearing out, needing parts replaced, or requiring a new coat of paint or some additional lubrication. Nevertheless, since the mid-1960s software maintenance has loomed large in the minds (and budgets) of any organization using or developing software systems.

The problem of maintenance is a ubiquitous but neglected element of the history of technology. All complex technological systems eventually break down and require repair (some more so than others), and, in fact, as David Edgerton has suggested, maintenance is probably the central activity of most technological societies.1 But maintenance is also low-status, difficult, tedious and risky. Engineers and inventors do not like maintenance (and therefore generally do not do maintenance), and therefore historians of technology have largely ignored it.

This coming weekend I will be attending The Maintainers: A Conference, a meeting of historians, social scientists, artists, activists, and engineers, all of whom “share an interest in the concepts of maintenance, infrastructure, repair, and the myriad forms of labor and expertise that sustain our human-built world.” I will be talking about the history of software maintenance, but the conference program is full of fascinating papers and presentations.

If you happen to be in the vicinity of NYC this weekend, the Stevens Institute of Technology is going to be the place to be!

Update: The public response to the Maintainers conference has been extraordinary and international. The organizers Lee Vinsel and Andrew Russell published an essay in Aeon that subsequently got reported on and reposted across the Internet. The conference has also been covered internationally in the French newspaper Le Monde and on Australian national radio.

  1. Edgerton, David. 2007. The Shock of the Old: Technology and Global History Since 1900. Oxford: Oxford University Press. 

Hipster HoC @ SXSW

February 15, 2016     #media

On March 12 at the South by Southwest festival in Austin, TX, I will be presenting as part of a panel on the untold history of women in computing. If you happen to be in Austin for SXSW, come see our panel Fact Check: Tech Has Never Been Just a Man’s World at 3:30! The venue is sponsored by Capital One, and is located at Antoine’s.

Also, one of my fellow panelists will be the documentary film maker Robin Hauser Reynolds of the fabulous CODE: Debugging the Gender Gap, which will be screening at the IU Cinema at 7:30 on Monday, March 7. Robin will be there and will be answering questions afterwards, so this is an excellent opportunity!

Beards, Sandals, and Other Signs of Rugged Individualism

November 10, 2015     #publications

One of the most far-reaching and influential aspects of my research on the labor history of computing has been my work on women in computing. In a recent article entitled “Beards, Sandals, and Other Signs of Rugged Individualism”: Masculine Culture within the Computing Professions, published in Osiris, the annual journal of the History of Science Society, I explore the flip-side of this history: namely, on the ways in which male programmers constructed both a professional and a masculine identity for themselves. I am thrilled to have this article finally available, in part because it has been years in the making (the original workshop on scientific masculinities hosted by Osiris was in 2012), but also because this research is so relevant to contemporary phenomenon.


Professor Nathan Ensmenger

Nathan Ensmenger is an Associate Professor in the Informatics department of the Luddy School of Informatics, Computing and Engineering at Indiana University.

He specializes in the social and labor history of computing, gender and computing, and the relationship between computing and the environment.

OFFICE HOURS (Spring 2025):
1-3pm Monday, noon-1pm Tuesday My office is in Myles Brand Hall, room 229