Source: Lists of Physicians and Midwives Whose Certificates Were Recorded, 1900-1915 (in the annual reports of the health commissioner of the city of St. Louis; published in The Mayor’s Message) Location: Library Vertical File: Physicians and Midwives Lists-Missouri-St. Louis
Last Name:	Barken
First Name:	Leo
Source:	39th Annual Report of the Health Commissioner for year ending April 11, 1916
Page:	56
Remarks:	physician