Cady designed the old Metropolitan Opera. The church was originally a Presbyterian church. I'm guessing that the studio was originally the sanctuary of the church, which must have faced east or west, and you would enter from the south center door. There would have been windows on the north side of the room, facing the inner courtyard. I'm friends with the Asst. Chief Counsel of Sony Entertainment. I'm going to ask him to put me in contact with someone who works in the archives, to see if they have any records, things like renovation blueprints.