Published in 2011 by Un-Gyve Press the 218 page hardcover book Twosomes features 202 plates, 101 image pairs representing forty years of photography by Mark Chester. The 11" x 13" hardcover book with dustjacket retails for $75. ISBN: 9780982919804. Designed by  Un-Gyve Limited. Introduction by Julia Courtney, Curator of Art for the Springfield Museums, Springfield, Massachusetts. Twosomes is a 2012 PDN Photo Annual winner in the Book Category.