1918~1923 U.S. AIR MAIL ISSUE-EDUCARD-1973년

1930~1933 U.S. ZEPPELIN AIR MAIL ISSUES-EDUCARD-1973년

THE 2C U.S. STAMP OF 1861-BLACK JACK(ANDREW JACKSON)-EDUCARD-1972년

U.S. 1847 FIRST GENERAL ISSUE AND OFFICIAL IMITATIONS-EDUCARD-1973년

U.S. 1857~1860 ISSUE REPRINTS-EDUCARD-1973년

U.S. 1861 TOPPAN CARPENTER 90C PROGRESSIVE ESSAYS-EDUCARD-1973년

U.S. 1861~1862 SECOND DESIGN,REGULAR ISSUES-EDUCARD-1974년

U.S. 1869 PICTORIAL ISSUE-INVERTS-EDUCARD-1973년

U.S. 1869 PICTORIAL ISSUE-"ATLANTA" TRIAL COLORS-EDUCARD-1973년

U.S. 1869-

U.S. 1870~1871 NATIONAL BANK NOTE COMPANY ISSUE-EDUCARD-1975년

U.S. 1870~1873 6C THE BANK NOTE COMPANIES, AND THEIR DIFFERENCES-EDUCARD-1974년

U.S. 1870~1882 BANK NOTE ENGRAVING DIFFERENCES-1C AND 3C-EDUCARD-1975년

U.S. 1873 THE 6C LINCOLN "OFFICIAL" STAMPS-EDUCARD-1974년

U.S. 1881 6C LINCOLN "ATLANTA" TRIAL COLOR PROOFS-EDUCARD-1974년

U.S. 1881~1887 AMERICAN BANK NOTE COMPANY ISSUES-EDUCARD-1976년

U.S. 1885~1908 SPECOAL DELIVERY ISSUES-EDUCARD-1975년

U.S. 1890~1893 AMERICAN BANK NOTE ISSUES-EDUCARD-1976년

U.S. 1894 THE FIRST BUREAU OF ENGRAVING AND PRINTING ISSUE-EDUCARD-1974년

U.S. 1898 TRANS MISSISSIPPI "ROOSEVELT" SMALL DIES-EDUCARD-1973년