My parents owned a Jewish summer camp, Camp Shawnee in the Poconos in the late 1950’s & early 1960’s. It was located in Shawnee on the Delaware, Pa.
Not only was Kashrut observed, it was the first accredited summer school at a camp.
I along with my brothers, attended Camp Ramah in the Poconos in the 1960’s @ early 1970’s.
Daniel Redelheim 
Ventnor City, NJ