Gawain WeaverGawain Weaver: Conservation and Consulting Services in the Care of Historic and Fine Art Photographs


The library includes image galleries, links to a few of my favorite photograph conservation/connoisseurship websites, bibliographies, and other useful resources.


 Process ID and Nomenclature

See the Photographic Processes page for more information


Image Galleries




Other Resources

American Civil War Revenue Stamps on Photographs, by Marci Jefcoat

Working draft of research on American Civil War Revenue stamps within the brief yet pivotal period 1864-1866, with emphasis on dating and/or estimating initial retail price of cartes de visite based on revenue stamp characteristics. Includes a brief history of revenue stamps, an exploration of cancelation methods from stamps to handwritten markings from the photographer, complete with photographs and analysis of specific examples. Download Paper [PDF]

Kodachrome Dating, by Felice Graciela Robles

Working draft of research on Kodachrome slide mounts, with emphasis on slide mount design evolution and typography by decade complete with examples. Includes a brief history of Kodachrome technology and slide mount formats, a roster of domestic and international Kodak processing facilities, and more to assist in dating. Download Paper [PDF]

Chromogenic Characterization: A Study of Kodak Color Prints, 1942-2008

Recent research by Gawain Weaver and Zach Long on chromogenic prints ”Chromogenic Characterization: A Study of Kodak Color Prints, 1942-2008” is now available in full, including many color images, on the Notes on Photographs website developed at George Eastman House. (links currently broken due to change in website at Eastman House, use PDF downloads below instead)

The article was also published in Topics in Photographic Preservation 13. A pre-publication version of the Topics article is available for download as PDFs in two parts: Chromogenic Article, Ektacolor Paper Backprint Chronology.   

A Guide to Fiber-Base Gelatin Silver Print Condition and Deterioration, by Gawain Weaver

A 41-page illustrated guide to how and why gelatin silver prints deteriorate, includes a 2-page chart and many diagrams in addition to photographs depicting each of the 15 forms of deterioration. Download Paper [PDF, updated April 2008]

A Guide to the Surface Characteristics: Kodak Fiber Base Black-And-White Papers, 2nd ed., by Kit Funderburk

A 60-page illustrated guide to how gelatin silver printing papers were made at Kodak, with emphasis on the variety of surface textures. Download Paper [PDF, updated 2009]

History of the Paper Mills at Kodak Park, by Kit Funderburk.

Download Paper [PDF, updated 2006]


Polaroid Identification Codes: Download PDF

Horvath, David G. (1987). The Acetate Negative Survey Final Report. Louisville, KY: Ekstrom Library Photographic Archives, University of Louisville. (link to the University of Louisville Ekstrom Library PDF is broken so it can be downloaded directly from here for the time being)

The Art & Artistry of the Photographers Mark: Vintage Lithography on Early American Cartes de Visite circa 1860 to 1880

E. Anthony, A Comprehensive and Systematic Catalogue of Photographic Apparatus and Material, Manufactured, Imported and Sold, 1854 (PDF)

Comparison Chart of Historical Film & Plate Speed Systems


Collections Preservation Grants

Photograph Conservation and Preservation

Photograph Collecting and Connoisseurship

Emergency Preparedness and Disaster Recovery

 Digitization Best Practices

Listservs of Interest

Please read the introductory words about each group before joining, each one has a specific focus