Robert Friedberg

• Die Besteuerung der Gemeinden
• Appraising and Selling your coins
• Appraising and Selling your coins ninth edition 1975 (A Complete Illustrated Catalogue of U.S. Coins and Bills and their Cash Premium Values from 1652 to present)
• Coins of the British world
• Die Besteuerung der Gemeinden
• Gold coins of the world
• Paper Money of the U. S.
• Paper money of the United States
• Paper Money of the United States. A complete illustrated guide with valuations. Third edition, etc
• Vorschläge zur technischen Durchführung einer prozentualen Börsensteuer