| |
Marion & Co.
Advert for "Marion's Ferro-Prussiate Process."
1885
Advert
Internet - Original source ill-defined
Source rquested. Published in: Mike Ware, May 2007, "Siderotypes by Sir John Herschel from Steel Engraving Diaphanes," Conference: Literature and Photography: New Perspectives,At: School of Art History, University of St. Andrews, Scotland
LL/116025
| |
LuminousLint 
@LuminousLint