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.
If anybody's curious, the film turned out to be Kodalith 2556 ortho film type 3. Not sure what i'll do with it. I'll cut a sheet or two into 4X5 to see what it looks like. After that, we'll see.