WPA Reort Spangler, Earl. The Negro in Minnesota,  Minneapolis, Minnesota: T. S. Denison & Company, Inc., 1961. Taylor, David Vassar. Pilgrim’s Progress: Black St. Paul and the Making of the Urban Ghetto: 1870-1930 Ph.D Thesis, University of Minnesota, 1977.

Solberg, Winton U.  “Martha G. Ripley:  Pioneer Doctor and Social Reformer,”  Minnesota History, Spring 1964, 1-17. The image on file:  2013 photo by Marilyn Chiat. Glenwood and Penn Ave. North   Caption:  The Marshal Stacy Nursery was built on this site in 1909, the Babies' Bungalow was added in 1910, and the Emily Paddock Cottage in 1911. In 1916 a new hospital was built and renamed the Ripley Memorial Hospital.