Last US Stamps Prices Scott 194 from the major stamp sales: 3c 1880 George Washington Bank Note Special Printing. 2015, 2014, 2013, 2012, 2011
184 - 1879 3c Washington, green - Mystic Stamp Company
3¢ Washington Of 1870-1881 - Stamp Community Forum
US Stamp Values Scott Catalog 25: 1857 3c Washington
Scotts #194 US stamps
U.S. George Washington 3c Green - Is it Scott 194? - STAMPBOARDS
US Stamp Price Scott # 376: 3c 1910 Washington Perf 12
US Stamp Values Scott #194: 3c 1880 Washington Special Printing
2003 Contractors - City Colleges of Chicago
July Philatelic Collector's Series Sale by Spink and Son - Issuu
Auction 110 by David Wood - Issuu
The New Amsterdam Collection of United States Rarities - July 10
U.S. George Washington 3c Green - Is it Scott 194? - STAMPBOARDS
The New Amsterdam Collection of United States Rarities - July 10
A Brief History of Stamp Collecting - Invaluable
Current Auction