Ralph F. Putzel (Putzel, Ralph F.)

• 
  The Comprehensive Handbook of the Postmarks of German South West Africa, South West Africa, Namibia
  by Ralph F. Putzel
  Hardcover, ISBN 0620155612 (0-620-15561-2)
• 
  Encyclopaedia of South African Post Offices and Postal Agencies (Including Their Forerunners in the Cape, Natal, Orange Free State, and Transvaal, Basutoland, Bechuanaland, and Swaziland, Etc.)
  by Ralph F. Putzel
  Hardcover, Hale & Putzel, ISBN 0620097817 (0-620-09781-7)

  More editions of Encyclopaedia of South African Post Offices and Postal Agencies (Including Their Forerunners in the Cape, Natal, Orange Free State, and Transvaal, Basutoland, Bechuanaland, and Swaziland, Etc.):

  • Encyclopaedia of South African Post Offices and Postal Agencies (Including Their Forerunners in the Cape, Natal, Orange Free State, and Transvaal, Basutoland, Bechuanaland, and Swaziland, Etc.): Hardcover, Hale & Putzel, ISBN 0620097825 (0-620-09782-5)
• 
  The Postmarks of South Africa: Including Postmarks of Former South African States and Colonies, Also Basutoland, Bechuanaland, and Swaziland, Including Commemorative Postmarks, but Excluding Machine Postmarks
  by Ralph F. Putzel
  Softcover, R.F. Putzel, ISBN 0620158247 (0-620-15824-7)

  More editions of The Postmarks of South Africa: Including Postmarks of Former South African States and Colonies, Also Basutoland, Bechuanaland, and Swaziland, Including Commemorative Postmarks, but Excluding Machine Postmarks:

  • The Postmarks of South Africa: Including Postmarks of Former South African States and Colonies, Also Basutoland, Bechuanaland, and Swaziland, Including Commemorative Postmarks, but Excluding Machine Postmarks: Hardcover, R.F. Putzel, ISBN 0620158239 (0-620-15823-9)
• 
  Postmarks of South West Africa under South African Administration: A Comprehensive Study, 1914-1977
  by Ralph F. Putzel
  Hardcover, Collectors Mail Auctions, ISBN 0620026405 (0-620-02640-5)
• 
  The Special and Commemorative Postmarks, Cachets, and Covers of South Africa, 1892-1975
  by Hasso O. Reisener, Ralph F. Putzel
  Hardcover, Collectors Mail Auctions, ISBN 0620032022 (0-620-03202-2)