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.
D. H. CONYNGHAM
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D. H. CONYNGHAM. Merchant. Conyngham began working for the wholesale liquor firm of W. H. Peabody & Company in 1857. He opened his own wholesale liquor store at 298 Main Street in 1874. His business was succeeded by Levens & Dillon who operated from 336 Main Street.