SPECIAL COLLECTIONS
Philadelphia. National Philatelic Museum.
x
SCG The philosophy of collecting. Philadelphia, .P9L9 National Philatelic Museum [1953]
.P53M 106p. illus. 23cm. (Its Official bulletin, v5 v.5,no.1)
no.l
1. Postage-stamps--Collectors & collecting.
I, Tttle. . MB