SPECIAL COLLECTIONS
Philadelphia. National Philatelic Museum.
*ScG Exhibition of "Masterpieces from Private Col- .P94L9 lections", from collections of trustees and of- -P53M ficers of The National Philatelic Museum, April v.2 20, 1950 to June 3rd, 1950. Philadelphia, Na-
no.4 tional Philatelic Museum, 1950. 367-482p. illus. 23cm. (Its Official bulle- tin, vie snd.)
1. Postage-stamps--Exhibitions. 2. Postage-
anperforiectors® & collecting. MB