The Gum Bichromate Book
Non-Silver Methods for Photographic Printmaking
by David Scopick

Gumoil Photographic Printing
by Karl P. Koenig

Beyond Monochrome:
A Fine Art Printing Workshop
by Tony Worobiec
and Ray Spence

The Book of Alternative Photographic Processes
by Christopher James

Alternative Photographic Processes
by Randall Webb &
Martin H. Reed

The Art of Enhanced Photography
by James Luciana
and Judith Watts

Photo-Imaging: Complete Visual Guide to Alternative Techniques and Processes
by Jill Enfield

Polariod Manipulations:
A Complete Visual Guide to Sx-70, Transfer, and Digital Prints
by Kathleen Thormod Carr

Making Digital Negatives
for Contact Printing
Book and CD
by Dan Burkholder

Printmaking in the Sun
by Dan Welden and Pauline Muir

Solarplate printing.

Handcolouring & Alternative Darkroom Processes
by Andrew Sanderson

Amazon.co.uk only.

Creative Photo Printmaking
by Theresa Airey

Photographer’s Guide to Polaroid Transfer: Step-By-Step
by Christopher Grey

Primitive Photography: A Guide to Making Cameras, Lenses, and Photographs
by Alan Greene &
Earl Alan Greene

Chine Colle:
A Printer’s Handbook
by Brian Shure

Polymer Photogravure
by Taneli Escola and
Kari Holopainen

Amazon.co.uk only.

The Complete Printmater

by John Ross

The New Photography

by Catharine Reeve and
Maralyn Sward

Bromoil:
A Foundation Course

by Derek Watkins