Mark Eshbaugh (born 1974)[1] is an American artist, author, educator, and musician.
[3] His contributions to the mordançage process include research into how different developing agents and their dilutions will result in different tonalities in the various emulsions of silver gelatin printing papers.
[3] Christina Z. Anderson's The Experimental Darkroom: Contemporary Uses of Traditional Black & White Photographic Materials, 1st Edition,.
[8] and Donald Nelson's Kallitype, Vandyke Brown, and Argyrotype: A Step-by-Step Manual of Iron-Silver Processes Highlighting Contemporary Artists, 1st Edition.
[9] Eshbaugh's artworks were included in the Reus Institut Municipal d’Accio Cultural Biennals Internacionals de Fotografia Medalla Gaudi in 2001 and 2003.