## Historical Research Using Photographic Plates ##
### Solar Eclipses ###
@[osf](wr8s6)
Caption: Frank Mills, [Yerkes Observatory](https://www.yerkesobservatory.org/) plate vault volunteer, examines a recently found 40" x 40" photographic plate that was exposed by [E. E. Barnard](https://www.britannica.com/biography/Edward-Emerson-Barnard) during the [1901 solar eclipse in Sumatra](https://www.si.edu/object/sumatra-eclipse-expedition:siris_sic_8156), courtesy W. Osborn. This plate is possibly the largest astronomical plate ever used.
For information about the expedition, see
Barnard, E. E. 1901, "[Total eclipse of the sun in Sumatra](https://articles.adsabs.harvard.edu/pdf/1901PA......9..527B)," *Popular Astronomy*, 9, 527, bibcode: [1901PA......9..527B](https://ui.adsabs.harvard.edu/abs/1901PA......9..527B/abstract)
### Women in Astronomy ###
Zrull, L. S. 2021, "Women in Glass: Women at the Harvard Observatory during the Era of Astronomical Glass Plate Photography, 1875-1975," *J. Hist. of Astron.*, 52, 115. bibcode: [2021JHA....52..115Z](https://ui.adsabs.harvard.edu/abs/2021JHA....52..115Z/abstract) doi: [10.1177/00218286211000470](https://doi.org/10.1177/00218286211000470)
Boegen, Lauren (behalf of the University of Chicago Project Team). 2022, "[Women of Yerkes](https://osf.io/r5hj6)"
Margolis, E. A. 2021, "The People Behind Astronomical Plates and Notebooks: Project PHaEDRA and the Harvard College Observatory Computers," *National Air and Space Museum* (Washington, DC: Smithsonian) [https://airandspace.si.edu/stories/editorial/project-phaedra-and-harvard](https://airandspace.si.edu/stories/editorial/project-phaedra-and-harvard)
Univ. Chicago Lib. nd. "Women at Yerkes," (Chicago, IL: Univ. Chicago) [https://www.lib.uchicago.edu/collex/collections/yerkes-plates/women-at-yerkes/](https://www.lib.uchicago.edu/collex/collections/yerkes-plates/women-at-yerkes/)
Wolbach. nd. "Women at the Harvard College Observatory," *Wolbach Library* (Cambridge, MA: CfA) [https://library.cfa.harvard.edu/glass-plates/women-at-hco](https://library.cfa.harvard.edu/glass-plates/women-at-hco)
