I feel like there's some good stuff hiding in the New York Public Library. But not being a New Yorker, I don't know anything about the NYPL. Is it possible for people to go check this stuff out? Is there some sort of restricted section? Would it take forever to even find these records? After all, they probably haven't been seen in 30 years.
If anyone on this board lives in NYC, they should look into this.
After searching the worldcat site for Jim Steinman, these are all ones that look interesting:
