- Scott Standard Postage Stamp Catalogue, Volume 3: Countries of the World G-I
- Scott 2008 Standard Postage Stamp Catalogue: Countries Of The World: P Sl (Scott Standard Postage Stamp Catalogue Vol 5 Countries P Sl)
- Scott 2018 Standard Postage Stamp Catalgoue, Volume 2: Countries of the World C-F: Scott 2018 Volume 2 Catalgoue Countries of the World C-F
- Scott 2008 Standard Postage Stamp Catalogue: Countries Of The World: C F (Scott Standard Postage Stamp Catalogue Vol 2 Countries C F) (Scott Standard Postage Stamp Catalogue Vol 2 Countries C F)
- 2010 Scott Standard Postage Stamp Catalogue 1
- Pivot Point International
- Kevin Burke
- Timothy Burke
- David J. Kalupahana
- Eric Gorr
- ROBIN PAIN
- Sar Perlman
- Terence J. McGhee
- Gerald J. Sherman
- E.W. Steel
- Gregory A. Remillard
- Mary Horsley
- John Penza
- Trude Dothan
- Thomas J. Shelford
- JoAnn Bortles
- Mary Beth McKenzie
- Sho Fumimura
- John J. Burke
- Josh Curtis