Magnolia House: hotel was in The Negro Motorist Green Book: 1940
The Negro Motorist Green Book listed travel-related services where black people were welcome during the Jim Cro era. This hotel is in the 1940 edition, p. 40, at http://digitalcollections.nypl.org/items/dc858e50-83d3-0132-2266-58d385a7b928#/?uuid=e0797360-83d3-0132-b79a-58d385a7b928.