Thanks for all of the suggestions. I'll try and trace the notches on the film sometime this evening.
The guy I bought the camera from, an older gent, was a photographer in the U.S. military. He cleaned out his freezer and gave me all sorts of film when I bought the Busch 4X5.
Not sure what I'll do with the film right now. I'll probably cut a few sheets into 4X5 and see how it looks. I'm very curious as to the type of film it is.