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.
PLUMBEOTYPE
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PLUMBEOTYPE. Early type of photograph. Developed by John PLUMBE, Jr., Dubuque resident and considered "Father of the Transcontinental Railroad," the plumbeotype was advertised as a daguerrotype reproduced on paper. Because the process was never patented, it is unknown to photographers or historians today.