Here is a link to an orgainization that I think is cool. I am just sorry that they have to exist for their stated purpose. American Snipers Support organization I will have to start a thread about the WWII sniper and see what comes up.
Don't know if it's relevant, but Osprey have an Elite series title called The Military Sniper since 1914. I haven't seen it, so I don't know exactly how much history is in it, but you can find it here
I have Out Of Nowhere: A History Of The Military Sniper sitting on my shelves waiting for me to read it. I have read another history of the sniper that goes back to the use of the crossbow. It had great stories of Stalingrad and talked about the Japanese sniper as well as Viet Nam.