James V. Cambell, "Biographical Sketch of Charles C. Trowbridge," read June 3, 1883, published in Pioneer Collections: Report of the Pioneer Society of the State of Michigan, 1907, pp. 478–491
"Mayors of the City of Detroit". Detroit Public Library. 2006. Archived from the original on September 28, 2011. Retrieved September 7, 2010. Note: Term dates come from this DPL citation, save for Mayors Cockrel and Bing, and the second term of Mayor Chapin.
"Mayors of the City of Detroit". Detroit Public Library. 2006. Archived from the original on September 28, 2011. Retrieved September 7, 2010. Note: Term dates come from this DPL citation, save for Mayors Cockrel and Bing, and the second term of Mayor Chapin.