You are incredibly lucky. When I go to the junkyard and mention a 1960's vehicle, they laugh at me.
This yard has vehicles all the way back to the teens. (as in 1918)
Saw a ton of 30's and '40's too. Pretty cool stuff. Lot's of '60's Mustangs. Only saw one first gen 'Maro.
Saw a pretty nice 1972 firebird. Pea green with a green interior. Looked pretty much complete, without much rust.