SPECIAL COLLECTIONS
Philadelphia. National Philatelic Museum.
*S0G Centenary Stamp Exhibition: Switzerland; com- -P9L9 memorating ... the centenary of the Swiss federal -P53M post and the seventy-fifth anniversary of the Vel Universal Postal Union, August 13 to September
no.9 14, 1949. Philadelphia, National Philatelic Museum, 1949. 64p. illus. 23cm. (Its Official bulletin, v.1,no.9)
1. Postage-stamps-—-Switzerland--Exhibitions. I. Title. MB