Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
GILLESPIE HILL
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GILLESPIE HILL. Construction of Highway 151 north of Dubuque past Sageville and Durango eventually came to the steepest grade--Gillespie Hill. These pictures show the construction of the roadbed.