My girlfriend gave me a couple Philip K. Dick pulp sci-fi paperbacks for Christmas this last year. This blow in card was in one of them.
I picked up a bunch more pulp sci-fi paperbacks at a thrift store recently and this blow-in card was in one of them.
I remember how stoked I was in the 80's pouring over the Science Fiction Book Club pamphlets. Of course the books weren't this cheap but they weren't that much more.
Anyway, I thought they were a neat little blast from the past.