SOURCES

Peter Gottlieb, State Archivist, has suggested the following as a starting point in verifying Underground Railroad sites in the State of Wisconsin

References:

J. N. Davidson, Negro Slavery in Wisconsin and the Underground Railroad, Parkman Club Publications, Milwaukee: 1897

Vroman Mason, Fugitive Slave Law in Wisconsin, 43rd Annual Meeting of the State Historical Society of Wisconsin, Madison: 1896

C. C. Olin, History of the Early Anti-Slavery Excitement

W. H. Siebert, The Underground Railroad in Wisconsin

Reminiscences:
Mary Chappel Porter (Green Bay)

County Histories

Church Anniversaries:
Janesville Congregational Church, 1845-1895

National Anti-Slavery Newspapers

Wisconsin Newspapers:
American Freeman/Milwaukee Freeman/Wisconsin Free Democrat (statewide paper, but also see local newspapers)

Archival Collections:
Sherman Booth Papers (Joshua Glover Case)
Lyman Goodnow Papers (Caroline Quarrels Case)

State Government Records:
Legislative Petitions
Supreme Court Records (Glover/Booth Case)

Circuit Court Records:
Citizenship records for escaped slaves returning from Canada and potentially other legal records; archived at the county level