The Duane Hilmer Collection of United States Stamps and Covers (specialized stamp auction catalog),  Robert A. Siegel, Sale #809, April 26, 1999, all lots are illustrated in color, 577 lots, with prices realized, 82 pages, black cloth hardbound, in fine condition.  This scarce hardbound catalog is a great reference for your philatelic library.  We will send to any U.S. destination by USPS Media Mail.