TY  - BOOK
AU  - Engel, John
TI  - Engel's Flag Stamp varieties catalog
PY  - 1945///
CY  - New York
PB  - Liberty Circle
KW  - United States | Commemorative Issues | 1943-1944 | 20th Century | Overrun Countries Issue | Catalogs and Price Lists | Errors and Varieties | Dealer Publications
ER  -