1955 - 1957
The Club 51 label was a side business in Chicago for local roller skating impresario and record store owner Jimmie Davis. Davis operated the label from March 1955 to some point in 1957.
In all there were just 7 releases on Club 51 (three other records that we know of were given limited circulation on test pressings but not actually released).
Source: The Red Saunders Research Foundation