1912 – ,
Bibliografía (22 obras)
Paper Money of the United States
1998
1997 Green Coin Book (24th ed)
1996
Aardvarks for Tea
1995
1994 Green Coin Book
1993
Paper Money of United Stat (Paper Money of the United States: A Complete Illustrated Guide with Valuations)
1992
1993 green coin book
Switching Channels
Nineteen Ninety Three Green Coin Book
1991 Green Coin Book
1990
1990 Green Coin Book
1989
Paper Money of the United States: A Complete Illustrated Guide with Valuations
1985 green coin book
1984
Appraising and selling your coins ... from 1652 to the present, and the complete coinage of Canada and Newfoundland from 1858 to date (The Green Coin book)
1975
Paper money of the United States
1968
Gold coins of the world, complete from 600 A. D. to the present
1965
Coins of the British world
1962
Appraising and selling your coins
1960
Gold coins of the world
1958
Gold coins of the world, complete from 600 A.D. to 1958
1953
