Here are some links to other excellent Feline Philately websites by Geir Arweng from Norway 

Cats on Stamps Study Unit by Marci Jarvis   

Feline Philately Forum

Purr ‘n’ Furr by Patrick Roberts from United Kingdom

Lions International Stamp Club 

American Topical Association

Mapcon. Interesting website with many useful resources


Guides to Stamp Collecting