1950s 3-cent commemoratives
1957-3c-Birth-of-Lafayette-Mint-Sheet
Ryukyu Islands Stamps - Selling Price List for Ryukyus - Buying Ryukyu Also, George C. Baxley
1861 Washington stamp
3 cent stamp Values - MAVIN
US Stamps and US Postage Stamps
US Postage Stamp Single 1953 Gadsden Issue 3 Cent Scott #1028 : Toys & Games
US Stamps and US Postage Stamps
Paper Money - Vol. X, No. 3 - Whole No. 39 - Summer 1971