[Kirk]

I'm surprised that I haven't come across this topic more often. Here are some links to organizations which may be of help. Sorry this looks like a big spam post.

American Society of Media Photographers - American Society Of Media Photographer

CAPIC - Canadian Association of Photographers and Illustrators in Communications, Canadian Photographers, Canadian Illustrators, Photographers, Illustrators, Photography, Illustration - Canadian Association Of Photographers and Illustrators In Communications.

Australian Institute of Professional Photography - Australian Institute of Professional Photography

The Advertising and Illustrative Photographers Association (AIPA) of New Zealand - Professional Photography for Commercial Applications - Advertising and Illustrative Photographers Association (New Zealand)

PHOTOGRAPHERS - Professional Photographers of America, Inc. - Professional Photographers of America

Stock Artists Alliance - Welcome | Stock Artists Alliance - Stock Artists Alliance

PACA: Picture Archive Council of America - Picture Archive Council of America

ASPP - American Society of Picture Professionals - American Society of Picture Professionals