The Saddleback Collection of United States Postal Stationery (specialized stamp auction catalog) Robert A. Siegel, Sale #936, May, 23 2007, all lots are illustrated in color, 188 lots, with prices realized, 100 pages, softbound, in fine condition.  This catalog is a great reference for your philatelic library.  We will send to any U.S. destination by USPS Media Mail.