The Atlas of Analytical Signatures of Photographic Processes – read the entire document (PDF)
Dusan C. Stulik and Art Kaplan,   The Getty Conservation Institute

“is intended for practicing photograph conservators and curators of collections who may need to identify more unusual photographs. e Atlas also aids individuals studying a photographer’s darkroom techniques or changes in these techniques brought on by new or di erent photographic technologies or by the outside in uence of other photographers. For a complete list of photographic processes available as part of the Atlas and for more information on the Getty Conservation Institute’s research on the conservation of photographic materials, visit the GCI’s website at

Pradip Malde and Mike Ware are cited for their work on pages 43-44

There are two corrections to be noted, both on page 43:

  1. “The Ware-Malde process calls for fixing, clearing, and washing of the print using ethylenediaminetetraacetic acid (EDTA), Kodak Hypo Clearing Agent, and water.” We recommend the ‘fixing’/clearing cycle as described in this Platinum and Palladium Printing summary
  2. “Fully processed prints are usually heat dried.” – while I have not tested for this, I do find it best to air dry, and then, for vellum papers, to further flatten them in a dry mounting press.

Pradip Malde, December 2017