Steve, my MIL spent every summer at LSP as a child. Her parents started out with a tent platform, and eventually built a small cabin there. She's 87 now, with a memory like a steel trap. Her very fondest memories are of her childhood and teen years at LSP, and she's got lots of great stories and information.
I'll pick her brain and get some info off to you as soon as I'm able. I may even be able to find some old photographs in the albums!
GravyBoat - fear not ... I won't pull out any photos of the shenanigans that went on up the road a piece! 
That is, unless our cousin from Texas doesn't get busy and start posting here! 