Does anyone know who was the earliest known dealer of cartridges for collectors? The earliest one I have found was W. S. Lutz of Chestertown, Maryland, who by January 1931 was offering a list of over 700 cartridges or a collection of 250 different of american and foreign cartridges at $15.
Edit: I also found that he was offering cartridges for collectors in 1928 with a Philadelphia, Pa. address.