Testament Records - United States - was created in 1963.
Testament Records - United States - ended in 1977.
Ace Records - United States - was created in 1955.
Triumph Records - United States - was created in 1958.
Sunshine Records - United States - was created in 2010.
Warwick Records - United States - was created in 1959.
United Records was created in 1951.
Lovepump United Records was created in 2004.
United Artists Records was created in 1957.
Warwick Records - United States - ended in 1962.
Triumph Records - United Kingdom - was created in 1960.
RPM Records - United Kingdom - was created in 1991.
One can find census records for the United States on a few different websites. Some of the sites are the United States Census Bureau and Family Search.