Tried to find definitive pictures of Nellie Ohr, since anons were not certain the pictures we've seen are actually the same person.
Strange. Hard to find data.
Nellie taught in the History Dept at Vassar College during the 1990s… specifically Russian History. Her name appears in the 1993 Vassar Quarterly, Fall 1993, but no picture (pic 1).
Her name appears in the drop-down list of Vassar professors even now (but no matching course were found either for this year or the earliest year you can query, 1996) (pic 2).
DDG listing takes you to the Vassar History Dept. past faculty
https://history.vassar.edu/about/previous-faculty/#g-search
but the alphabetical list does not include Nellie Hauke Ohr or Nellie Hauke (pic 3).
It looks to me like some of her bio has been scrubbed from the web. Traces remain, but not a full history as you would expect to find.
Supposedly she is the author of book(s) but the only thing I can find is one published scholarly article:
https://www.journals.uchicago.edu/doi/abs/10.1086/245339
Nellie Hauke Ohr, "Women, the State, and Revolution: Soviet Family Policy and Social Life, 1917-1936. Wendy Z. Goldman , Judy Barr Inessa Armand: Revolutionary and Feminist. R. C. Elwood ," The Journal of Modern History 68, no. 1 (Mar., 1996): 258-262.
https://doi.org/10.1086/245339
I don't quite understand that citation – is it a book review by Nellie of a book by Goldman, Barr and Armand? (pic 4)
A 418-page, 1990 book by Nellie Ohr (her Ph.D. thesis) was published by Stanford Univ. Press
https://searchworks.stanford.edu/view/509330
Collective farms and Russian peasant society, 1933-1937 : the stabilization of the kolkhoz order. (pic 5)
Many dead ends here.