Wow– I was just thinking about this camp after 50 or so years.
I attended approx. 1965-1968.
I lived on lower east side and went to MTJ.
A guy in my building who was older was a counselor at the camp– he was killed at camp deal by a lighting bolt on a Friday before the Sabbath. We were playing baseball outside of the dining room when it struck him in his belt. Likely occurred in 1967 or so.
Some older lady owned the camp and it was free for most.