35 East Wacker (English Wikipedia)

"35 East Wacker Building". City of Chicago Department of Planning and Development, Landmarks Division. 2003. Archived from the original on June 30, 2009. Retrieved November 21, 2010.

chicago.gov

"35 East Wacker Drive Building". Chicago Landmarks. City of Chicago. Archived from the original on December 28, 2023. Retrieved December 28, 2023.

"Jewelers Building of Chicago". The Elevator Constructor. Vol. 23, no. 6. Philadelphia, Pennsylvania. 1926. pp. 5–21. hdl:2027/uiug.30112078161897.

"Al Capone and the Jewelers' Building". Mysterious Chicago Tours. June 2, 2016.

"National Register Information System". National Register of Historic Places. National Park Service. January 23, 2007. Retrieved November 21, 2010.

Murphy, Mekado (June 22, 2011). "Welcome to Chicago, Just Don't Kill Us". The New York Times. Retrieved July 1, 2011.

"Headquarters | the Sigma Chi Historical Initiative". Archived from the original on January 17, 2019. Retrieved January 16, 2019.

"Chicago". SkyTeam. Archived from the original on January 29, 2009. Retrieved January 31, 2009.

Wagner, Robert (February 3, 1978). "Michigan–Wacker Historic District" (PDF). National Register of Historic Places Inventory — Nomination Form. National Park Service. Archived from the original (PDF) on March 5, 2016. Retrieved December 31, 2015.

"Emporis building ID 117142". Emporis. Archived from the original on March 4, 2016.{{cite web}}: CS1 maint: unfit URL (link)
"35 East Wacker Drive Building". Chicago Landmarks. City of Chicago. Archived from the original on December 28, 2023. Retrieved December 28, 2023.
"35 East Wacker Building". City of Chicago Department of Planning and Development, Landmarks Division. 2003. Archived from the original on June 30, 2009. Retrieved November 21, 2010.
Wagner, Robert (February 3, 1978). "Michigan–Wacker Historic District" (PDF). National Register of Historic Places Inventory — Nomination Form. National Park Service. Archived from the original (PDF) on March 5, 2016. Retrieved December 31, 2015.
"Chicago". SkyTeam. Archived from the original on January 29, 2009. Retrieved January 31, 2009.
"Headquarters | the Sigma Chi Historical Initiative". Archived from the original on January 17, 2019. Retrieved January 16, 2019.