Nan Richardson, founder of Umbrage Editions, has worked as an editor for twenty years, on more than one hundred and forty book titles, at Aperture, Random House, and Chanticleer Press, as well as with museums and small publishers in the United States and Europe, including DIA, The Renaissance Society, The Milwaukee Art Museum, The Musee d'Orsay, and The Victoria and Albert.

She is the author or co-author of a number of books, among them Louise Dahl-Wolfe (2000), Speak Truth To Power (Editor 2000), Malcolm X Speaks Out (1992), Mothers & Daughters, Gorilla, Swimmers and Towards a Bigger Picture (1987, 1988 and 1989), Wild Love, Wild Babies, and Drag Diaries (1994, 1995), Fishy Facts, Furry Facts, Feathery Facts and Scaly Facts (Harcourt Brace, 1994 and 1995), The White T (Harper Collins, 1996).

She founded Umbrage Editions, a packager specializing in visual books and exhibitions, in 1991 (formerly Umbra), and has published nearly ninety books under the imprint. Ms. Richardson writes frequently for a variety of periodicals, including The Los Angeles Times Magazine, The Boston Review of Books, Stern, Granta, The Massachusetts Review, Allure, Interview, Art News, Artforum, Art & Auction, Art and Antiques, Art in America, Journal of Art, Mother Jones and others. She is a former editor of Aperture magazine and has lectured and taught widely on photography and bookmaking. Ms. Richardson lives in New York City with her husband, Andrew Karsch, a film producer.

Lesley A. Martin, is an editor and project manager at Umbrage Editions. Former managing editor of Aperture, she has edited a wide range of photographic titles, including Heart of Spain: Robert Capa's Photographs of the Spanish Civil War, Stieglitz on Photography: His Selected Essays and Notes, and No Ordinary Land. In 1998, she was selected as a juror for Life magazine's Alfred Eisenstadt Award. With Umbrage, she has served as consulting editor on the Speak Truth to Power book, website, and educational packet, and editor of Louis Dahl-Wolfe and Sarajevo Self-Portrait, as well as the forthcoming Nikki S. Lee: Projects. Her writing on photography has been published in Aperture, American Photo, and Interiors magazine, among other publications.