The poster for Grace's soloist debut states the date as Saturday, November 11th, 1918 but the newspaper article back home says it was a Monday. The newspaper was correct.
The wall calendar page in the kitchen of the Central Park apartment starts on a Friday when that month actually began on a Wednesday.
Grace's hometown is misspelled "Jellicoe" instead of "Jellico." While this mistake has been made over many decades by many others, you'd think someone in a biopic production would at least make a phone call or check a map to get it right.