In 2014, United States Naval History and Heritage Command (NHHC) photo archivists rediscovered a donation in their backlog of unprocessed collections containing approximately 325 original glass plate photographs from the Spanish-American War and the Philippine-American War. Based on the inscription located at the top of one of the two wooden boxes containing the slides, the contents appear to have originally belonged to Douglas White, a war correspondent employed by the San Francisco Examiner.
Nearly all of the slides included are identified and contain a caption. Most are black and white, though some have been hand tinted in color. The slides have been rehoused in archival sleeves and boxes, and an index of their contents was also created. Roughly, 25% of the photographs have been digitized and are available on the NHHC website.
Researchers in The Spanish-American War in Glass collection can view the digitized images and learn more about it here:
The Spanish-American War in Glass