| 1376-79 Botanical Congress USED BLOCK/4 |
| US 2004 Library of Congress Plate Block PB 4 Stamps MNH |
| BOTANICAL CONGRESS~#1376-79~MNH BLOCK OF (4)~U.S.Stamps |
| 2004 Library of Congress ~ Plate Block MNH |
| 1st CONTINENTAL CONGRESS~#1543-46~MNH BLOCK ~U.S.Stamps |
| 10c 1974 - CONTINENTAL CONGRESS #1543-46 BLOCK OF 4 |
| #1376-79 Botanical Congress Plate Block Never Hinged |
| #1376-79 1969 6c Botanical Congress Plate Block US |
| BOTANICAL CONGRESS 4 Stamp block |
| 20TH UNIVERSAL POSTAL CONGRESS PLATE BLOCK SOUVENIR |
| RUSSIA/USSR 1978 Trade Union Congress. Block of 4v, MNH |
| RUSSIA/USSR 1986 Party Congress 20k. Block of 4v, MNH |
| PORTLAND CLUB ME CONGRESS BLOCK PC Adv. TAILOR in BLDG |
| 20TH UNIVERSAL POSTAL CONGRESS BLOCK OF 8 MATTED |
| 1982 Workers' Party Congress Michel Block 46 |
| GREECE 1966 TOBACCO CONGRESS BLOCK 4 SET MNH |
| GREECE 1968 GREEK ORTHODOX CONGRESS BLOCK 4 SET MNH |
| GREECE 1968 CARDIOLOGY CONGRESS BLOCK 4 SET MNH |
| GREECE 1965 A.H.E.P.A. CONGRESS BLOCK 4 SET MNH |
| 1960 United Nations 5th World Forestry Congress block 4 |
| SEATTLE 1960 5TH FORESTRY CONGRESS BLOCK FARNUM FDC |
| FIRST CONTINENTAL CONGRESS #1543-46 BLOCK PHILA, PA |