TY  - BOOK
AU  - National Philatelic Museum
TI  - 1950 International Airpost Exhibition: September 16th-October 11th 1950 at National Philatelic Museum under the auspices of American Air Mail Society and National Philatelic Museum in conjunction with 27th annual convention American Air Mail Society, September 22 thru 24, 1950
T2  - National Philatelic Museum
PY  - 1950///]
CY  - Philadelphia
PB  - National Philatelic Museum
KW  - Air mail stamps
KW  - Postage stamps
N1  - Spine title: Airpost 1950 exhibition
ER  -