Source: The Earlier Years of the Drug and Allied Trades in the Mississippi Valley, by A.C. Meyer (published in 1948) Location: St.L / 338.4 / M575
Last Name:	Duering
First Name:	H.
Middle Name:	C.
Title:	Dr.
Page:	96-98
Remarks:	listed as member of St. Louis Veteran Druggists' Association