Nice story, but the first link needs a bit of "education":
"Between records, though, he came across a batch of black-and-white photographs printed with the high-end gelatin silver process, a favorite of fine-art photographers from the 1870s until the 1960s."
Ah yes, of course the gelatin silver process was only known to fine art photographers as the plebeian masses continued to use wet collodion all the way until the 1960's.
Ah yes, of course the gelatin silver process was only known to fine art photographers as the plebeian masses continued to use wet collodion all the way until the 1960's.