Almost reminds me of a field near me. Not quite as big, but the guy has a couple AMC's, 2 dusters (one is gold 4 speed car), a 70 GTX, and a 1967 dart. He won't sell any of them. Doesn't have any plans to do anything with them, but literally won't sell anything.
His yard isn't a secret. He advertises in MC magazine monthly and he can be found at most swap meets buying and selling parts. It's only new to the GM/Ford people