If you are doing research in nineteenth-century photographs it can get quite complicated to keep track of the different processes for developing images. Often images that are listed in archival catalogs online will include references to which process was used, but for a brief description of how that process worked, you will need a resource such as this explanation from the American Photography Museum, or the one I am handing out in class. If you are really interested in the science behind development, there are also more specialized sites like this one for daguerreotypes. Two of the images we are analyzing are stereographs, or 3-D images, viewable with a stereoscope (pictured left).
Also, for reference these are the links to the images we are analyzing in class of Union hospitals:
Harewood Hospital, Washington D.C. (1864) — http://www.loc.gov/pictures/item/cwp2003000981/PP/
Field Hospital at Savage Station, Virginia (1862) — http://www.nlm.nih.gov/exhibition/lifeandlimb/images/OB1206.jpg
Armory Square Hospital, Washington D. C. — http://teaching.msa.maryland.gov/000001/000000/000158/images/05-0431a.gif
Winslow Homer, “Our Women in the War” (1864) — http://civilwarinart.org/items/show/98
Winslow Homer, “The Surgeon at Work at the Rear during an Engagement” –
– http://civilwarinart.org/items/show/99
Wounded Union Soldiers from Battle of the Wilderness at Fredericksburg, Virginia (1864) — http://www.loc.gov/exhibits/treasures/images/ww0025s.jpg
U.S. Sanitary Commission at Gettysburg (1863) — http://lcweb2.loc.gov/service/pnp/ppmsca/33700/33752v.jpg
Hospital Tent at Gettysburg (1863) –
– https://www.nlm.nih.gov/exhibition/lifeandlimb/images/OB1210.jpg
Unknown Artist, “The United States General Hospital” (1861) –
– http://civilwarinart.org/items/show/26
HIST4330: Civil War and Reconstruction 
