I have the "Open Matte / Not OAR" note on my pre-90s list, and I'm pretty sure I've only added those notes when Mr. Furmanek has stated it is a widescreen film. Hmmmm....
EDIT: It's gonna depend on when it was shot. According to 3D film archive here the last non-widescreen film for Paramount in...
The now OOP release of Houdini by Legend was open matte. Here's hoping this release is properly widescreen.
EDIT: 1.37 is correct for Houdini. I had bad info (see next few posts)