Version 8.6 of the list (pdf) has new references to the tall office building in St. Louis designed but never built by Wheeler & McClure; a correction to the spelling of Selmar Hess; and a correction to the addresses of the project at 258 and 260 West 75th Street (there was no number 260, it was 316 West End Avenue).
A research trip to Wilmington, Delaware yielded a tour of the Playhouse Theatre in the DuPont Building (thanks, Michael). The interior is being renovated:
The theater was added to the rear of an existing building and was not meant to have a public facade. This is the most interesting “exterior” wall:
