Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
MANNING, John N.
Family History: http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=dawnajl&id=I21006
MANNING, John N. (Petersburg, IL, Sept. 5, 1844--Grantsville Township, Linn, MO, Mar. 13, 1919). Manning learned his future business in Chicago and served an apprenticeship. His first job was superintendent of the steam-heating department of the Crane Brothers Manufacturing Company for five years. He was in charge of outside construction.
Coming to Dubuque in August 1879, he became the superintendent of the DUBUQUE STEAM HEAT COMPANY.
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Source:
Oldt, Franklin. History of Dubuque County, Iowa. Chicago: Western Historical Company, 1880, p. 846