SPECIAL COLLECTIONS Philadelphia. National Philatelic Museum. SOG First Liberia Stamp Exhibition, November 20, .P9K9 1950-January 6, 1951; sponsored by the Liberia -P53M Stamp Society of America. Philadelphia, National v2 Philatelic Museum, 1951. no.9 1071-1230p. illus. 23cm. (Its Official bul- letin, v.2,no.9)
1. Postage-stamps-—-Liberia--Exhibitions. I. Liberia Stamp Society of America.