[Domer05]

Joe,

I'm not familiar with any maker d/b/a "College Flag Co." However, I am familiar with two pennant makers located in Columbus, OH doing business in the mid-1910s: Ohio Pennant Co. and H.A. Morgan Co. See below examples.

As concerns the latter company's label ... it sure resembles yours, doesn't it?? Same font. Both say, "COLUMBUS, O" which strikes me as kind of unique.

Maybe Mr. Morgan sold the business by 1915, and the new owner adopted your name? Hard to imagine there being three pennant makers in one college town....