Voice-O-Graph Labelography (Part 7)

This is my seventh update to my Voice-O-Graph Labelography project. I have enough information to post just one more variant for the list today. Sadly it is undated and I have not found anything to corroborate it's age. It is similar to no other disc in the labelography. Presently it is listed as "Yellow Label." I have found evidence of anther disc that I will document later. It is just a red-text variant of the Blue on White disc. I've estimated to date to the 1960s.

Remaining work needs done in the area of date confirmation and integration of the anachronistic metal-core green label discs. I also do not discount the possibility of more color variants. [Contributions are always welcome if you know more.]
Red Top on Yellow: Unknown, assumed to be first disc1943?

GEM Mutoscope Disc: 1945?

Red on Yellow: 1943, 1944, 1945, 1946, 1947

Red on Beige: 1946, 1948

Red on Unbleached: Unknown 1940s?

Red On Blue: Years 1947

Teal-on-Unbleached : Year: 1948 (assumed)

Blue on Blue: Year: 1948

Black On Red: 1948

Black on Green: Years:1951,1953 - 1955 (also had metal core variant)

ESO Mutoscope Disc: 1950s?

Mutoscope Black Label: (45 rpm) Years????

Black on White (45 rpm) 1957, 1959

Blue on White: Unknown assumed 1960s?

Black on Yellow: Years 1964

Black on Red: Unknown assumed 1964?

Yellow Label Unknown assumed 1964?