Williamina Paton Stevens Fleming (15 May 1857 – 21 May 1911) was a Scottish astronomer active in the United States. During her career, she helped develop a common designation system for stars and cataloged thousands of stars and other astronomical phenomena. Among several career achievements that advanced astronomy, Fleming is noted for her discovery of the Horsehead Nebula in 1888. After she and her young son were abandoned by her husband, Williamina Fleming worked as a maid in the home of Professor Edward Charles Pickering, who was director of the Harvard College Observatory. During her career, Fleming discovered a total of 59 gaseous nebulae, over 310 variable stars, and 10 novae. Can you even imagine for a while! Most notably, in 1888, Fleming discovered the Horsehead Nebula on a telescope-photogrammetry plate made by astronomer W. H. Pickering, brother of E.C. Pickering. She described the bright nebula (later known as IC 434) as having "a semicircular indentation 5 minutes in diameter 30 minutes south of Zeta Orionis". Subsequent professional publications neglected to give credit to Fleming for the discovery. The first Dreyer Index Catalogue omitted Fleming's name from the list of contributors having then discovered sky objects at Harvard, attributing the entire work merely to "Pickering". However, by the time the second Dreyer Index Catalogue was published in 1908, Fleming and her female colleagues at the HCO were sufficiently well-known and received proper credit for their discoveries. She also discovered the very first dwarf star. She died of pneumonia in 1911. The women of the Harvard Computers were famous during their lifetimes, but were largely forgotten in the following century. In 2015, Lindsay Smith Zrull, curator of Harvard's Plate Stacks collection, was working to catalog and digitize the astronomical plates for DASCH and discovered about 118 boxes, each containing 20 to 30 notebooks, from women computers and early Harvard astronomers. She realized that the 2,500+ volumes were outside the scope of her work with DASCH, but wanted to see the material preserved and made accessible. Smith Zrull reached out to librarians at the Harvard-Smithsonian Center for Astrophysics.