billgrill, I suggest you get letters of provenance from Mr. Callahan, which may assist you in placing a name with the gun. Assumming the first owner shot competitive trap, (not all of them did) he can be identified by name and accomplishments in old trapshooting publications like the annual ATA average books and such. Go on foxcollectors.com, register, and ask someone to give you the address for Mr. Callahan who has access to the
Fox records.