Linda A. Ries and Jay W. Ruby, 1999. Directory of Pennsylvania Photographers, 1839-1900 is the first comprehensive authority on the Commonwealth's nineteenth century men and women who made the images we study and appreciate today; compiled by two internationally recognized photography historians, Linda A. Ries of the State Archives and Jay W. Ruby of Temple University. Entries include names, locations and addresses of studios, dates of operation, and other pertinent biographical information. The Directory is a necessary tool for anyone researching Pennsylvania's historical photographs. 359pp., 8 1/2 x 11, foreword, index paperback