600 South 6th Street was not open as a tavern or saloon in the late 1880s or early 1890s.  A Thomas C. Giberson ran a grocery and lived there in 1887, according to the City Directory of that year. John J. Keefe owned and operated the establishment in the 1900s and 1910s. The 1918-1919 Camden City Directory reveals that John Monaghan was the proprietor. The bar changed hands, and the 1931 edition of the City Directory shows a Leon Horey running a "soft drinks" business at the address. With the 1933 repeal of Prohibition, a liquor license was obtained for the building.

In June of 1939, it was reported in the Camden Courier-Post that a Clarence Boreszweski received a liquor license renewal for the property. The 1940, 1943, and 1947 directories also show him and wife Margaret at the property, as does the 1959 New Jersey Bell Telephone Directory. In these years the bar was known as the 600 Cafe. An April 1959 banquet program from the 1959 Veterans Boxing Association Ring No. 6 banquet has an advertisement that indicates that Mr. Boreszewski was also known as Clarence Bush.

Clarence F. Boreszewski was born February 18, 1907. At some point after 1959 he moved from Camden to 6916 Browning Road in Pennsauken NJ. Clarence Boreszewski died in May of 1973, survived by his wife Margaret, who passed October 16, 1993. 

The 600 Cafe appears to have closed when the Boreszewski's left. The bar was not listed in the 1966 New Jersey Bell Telephone Directory, however, My Girls Inc. applied for a renewal of their liquor license at this address in June of 1967. The principals of My Girls Inc. included Harry Carty of 1 Baird Avenue in Mt. Ephraim and Angelo DeClemente. It appears that Mr. Carty may also have had an interest in a bar called Ed's Place at 601-603 Kaighn Avenue as well at the time. 

Veteran's Boxing Association Ring No. 6