Bonn, Inc., (distributor), Milwaukee, WI Brewed by Whitewater Brewing Co., Whitewater, WI  1906-1916, 1933-1942 Bonn Pilsner was brewed from 1937-1940 (info thanks to Vic Kroll). Additional info from "Wisconsin Beer Labels: The First 75 Years" lists the label under Blumer Brewing of Monroe, WI and under "various unassigned Milwaukee labels".  Who brewed this beer?
BONN-1  1937-1940 Fred Ungar collection

 

Bosch Brewing Co., Lake Linden, then Houghton/Hancock, MI 1874-1918, 1933-1964
BOSCH-1  1960's	BOSCH-2  1964 Fred Ungar collection	BOSCH-3  1964 Fred Ungar collection (this glass wanted)

 

Boston Beer Co., Boston, MA 1984-present
BOST-1  obverse  1999 (this glass wanted)	BOST-1  reverse	BOST-2  obverse  1994

BOST-2  reverse

BOST-3 reverse (obverse same as BOST-1) Fred Ungar collection (this glass wanted)