GEORGE ZUMHOF. The 1858-1859 Dubuque City Directory listed his ice company at White between 5th and 6th.
The 1870-1871 through 1873-74 Dubuque City Directory gave the address of this business, commission merchant and meat packer and bar, as the north side of 4th between Iowa and Clay.
The 1874-1875 through 1878-79 Dubuque City Directory stated that this business was located at 387 4th.
The 1883 Dubuque City Directory stated that this business was located at 387 4th. His hardware store was found at the corner of 4th and Clay.