Movie theaters used uniformed Black ushers in the 1940's as servants. There were no food concession in theaters so their role was to serve the White audience.
According to the IMDB, it was released on October 23rd, 1941.
The Black Curtain was created in 1941.
Black Eyes and Blues - 1941 is rated/received certificates of: USA:Approved
Black Marvel was created in 1941.
Black Stalin was born in 1941.
Black Terror was created in 1941.
Francis Black died in 1941.
Ira Black was born in 1941.
The Black Cat - 1941 is rated/received certificates of: Canada:PG (Ontario) Sweden:15
Black Eyes and Blues - 1941 was released on: USA: 18 April 1941 USA: 20 February 1956 (re-release)
Ian Black - swimmer - was born in 1941.
David MacLeod Black was born in 1941.