The Postal History of Costa Rica to 1883 by Frajola and Mayer

published 2008 by The Collectors Club

The U. S. Post Offices in China and Japan, 1867 to 1874 by Frajola, Perlman, Scamp

published 2006 by The Collectors Club

The United States Five Cent Stamp of 1856 by Frajola and Mayer

published 2005 by The Collectors Club

The Pony Express, A Postal History by Frajola, Kramer and Walske

published 2005 by the Philatelic Foundation

Public Auction Catalogs (58 auction catalogs and 4 net price sales), sales include material from the collections of Ambassador J. William Middendorf III, Marc Haas, Amos Eno, Stephen Albert, Oscar Salzer, Thomas Alexander, et al. Notable finds include the Crittenden find of Pony Express covers and the Chase correspondence of Waterbury, Connecticut fancy cancels.

published 1981 / 1995 by Richard C. Frajola, Inc.

The Postage Stamps of Siam to 1940, A Descriptive Catalog by Frajola (out of print)

published 1980 by Postilion Publications