Special Thanks To:
- Patricia Flesher, Bruce McIntosh, Louisa Verma – American Cement Association / Portland Cement Association
- Peter Bernotas – International Historic Films, Inc.
- Angela Hoover – Chicago History Museum
- Laurie Goldberg, Jackie Lamaj, Kaitlin McIntyre, Phil Zimmerman – Discovery Channel
- Geoffrey Goldberg
- Howard Swibel
- Lori Boyer, Dave Hofer – The Art Institute of Chicago
Photographers:
- Airpix
- Archer, Alexander
- Arvidson, Ralph
- Barkus, Albert
- Becker, Lynn
- Berman, Chuck
- Brogan, Dianne
- Budrys, Michael
- Burley, Ray
- Cabanban, Orlando
- Chapin, John R.
- Chunko, Michael
- Dahlman, Steven
- Dale, Bruce
- Dodson, Larry
- Fila, Bob
- Giboux, Jean-Marc
- Goldberg, Laurie
- Harr, Bob
- Hawk, Thomas
- Hedrich Blessing
- Hogan, Lee
- Hogeorges, Betty
- Honston, W.J.
- Huebl, Paul
- Huiner, Kenneth
- Jackson, Brian
- Jameson, David
- Jedd, Joseph
- Keating, John Jr.
- Knauss, Tom
- Kobluk, Michael
- Korling, Torkel
- Kotalik, Bob
- Kravitz, Jeff
- Lambert, Anita
- Lenahan, Jack
- Leonard, Mike
- Mandler, Arthur P.
- Meech, Earl
- Merkle Press Inc.
- Najolia, Dom
- Nickel, Richard
- Penrod, John
- Pesek, Gene
- Pierce, Douglas
- Ransdell Photo
- Roberts, Ebet
- Shay, Art
- Sheinwald, Richard
- Stanfield, James L.
- Terry’s Photography
- Trylong, Chris
- Walker, Chris
- White, Diane Alexander
- Williams, Ted
- Yanul, Thomas
- Youngwerth, Frank
Image Archives:
- Art Institute of Chicago, Ryerson and Burnham Art and Architecture Archive, Bertrand Goldberg Archive
- Chicago History Museum, Chicago Sun-Times Collection
- Chicago Public Library, Special Collections and Preservation Division
- Getty Images
- Metropolitan Water Reclamation District of Greater Chicago
- National Museum of African American History & Culture
- Ronald Reagan Presidential Library, White House Photo Collection Galleries
- Tribune Content Agency
- University of Illinois at Chicago Library, Special Collections and University Archives
- University of Wisconsin-Madison Archives
- Wayne State University, Walter P. Reuther Library, Archives of Labor and Urban Affairs
Interview (long-form) Subjects:
- Anderson, Joe
- Ekstrom, Clarence
- Falk, Vincent
- Ferche, Patricia
- Goldberg, Geoffrey
- Goldstein, Ilene
- Hogeorges, Betty
- Huebl, Paul
- Jameson, David
- Koz, Rich
- Lattner, Johnny
- Leonard, Mike
- Levin, Roger
- Lopez, Joseph
- Palmer, John
- Pratt, John
- Reilly, Brendan
- Schiff, Steven
- Schramm, Michael
- Simpson, Stephanie
- Swibel, Howard
- Troffer, Terry
- Wallenda, Nik
Property Access:
- 400 North LaSalle Condominium Association – Diana Breting, Property Manager
- Courtyard by Marriott Chicago Downtown/River North – Chris Kerbow, General Manager
- Hard Rock Hotel Chicago – Rick Hulse, General Manager
- Hotel 71 – Steve Shern, General Manager; Greg Naylor, Director of Sales & Marketing
- Hotel Sax, Chicago – General Managers Michael Carsch, Mark Deinhart, Mario Mazzini, John Price
- Jefferson Beach Yacht Sales – Bob Godek
- Marina Management Corporation – Shari Vass, President
- Marina Towers Condominium Association – David Gantt, Property Manager
- Related Midwest – Tricia Van Horn, Vice President of Marketing
- Renaissance Chicago Hotel – Catherine Mrowiec, General Manager; Alissa Infante, Marketing Manager
- Smith & Wollensky – Peter Norton, General Manager
- Transwestern Commercial Services – David Clarkson, Robert DeMarke, Tiffany Moore, John Herbst
Other Assistance:
- Ryan Argast
- Bob Dearborn
- Grant DePorter
- Tony Dudek
- Dr. Martin Flynn
- Richard Fulghum
- Daniel Goodstein
- R. Kymn Harp
- Rick Kaempfer
- Michael Kobluk
- Sarah Lebovitz
- Roger Levin
- Marko Lucht
- Mark Mandler
- Earl Meech
- Megan Moriarty
- Rich Moskal
- A.J. Robinson
- J.R. Russ
- Richard Shay
- Adam Tucker
- Bill Vint