I live in Fishkill, Dutchess,New York,across the Hudson River from Newburgh.  I don't know if there is any connection between your Schulman but I do know that there was a Sid Shuman that owned an Army Navy store in Beacon, NY which is one town away from Fishkill. The name rang a bell so I sent you this.  People change their name spellings too.

Catherine Pietrogallo