Elvera Sanchez worked along side of whom at Club Harlem?
Grace's Little Belmont:  Wild Bill Davis and his swing and jazz quartet were featured summer performers from 1950 through the mid-1960s, and Elvera M. "Baby" Sanchez, mother of Sammy Davis, Jr., worked at the bar. Elvera Sanchez: Elvera Sanchez (September 1, 1905 – September 2, 2000) was an American dancer and the mother of Sammy Davis Jr.
Wild Bill Davis and his swing and jazz quartet were featured summer performers from 1950 through the mid-1960s, and Elvera M. "Baby" Sanchez, mother of Sammy Davis, Jr., worked at the bar.