Sources
Our Times: The Illustrated History of the 20th Century; Chronicle of the World; The History Channel; Encyclopedia Americana; Boy Scouts of America; Fort Worth Star-Telegram/KRT; Chronicle of the 20th Century; The People's Chronology: A Year-by-Year Record of Human Events from Prehistory to the Present; "Comet Fever," by Donald Gropman; "Our Times: America at the Birth of the 20th Century," by Mark Sullivan; "Panti's Parade of Fads, Follies and Manias," by Charles Panati; "Facts & Dates of American Sports: From Colonial Days to the Present," by Gorton Carruth and Eugene Erlich; What Happened When; Great Events of the 20th Century; "Down With the Old Canoe: A Cultural History of the Titanic Disaster," by Steven Biel; "Famous First Facts About the Presidents," by Joseph Nathan Kane; Chronicle of America; The Annals of America; The Film Encyclopedia; "The Life and Times of the Man Who Invented the Telephone," by Edwin S. Grosvenor and Morgan Wesson; Norman Rockwell Museum; A Treasury of Great Reporting; The Food Chronology; The New Yorker; "The Romanovs: The Final Chapter," by Robert K. Massie; American Legion; Legalize-USA; The Sporting News; Timelines of African-American History; "Only Yesterday," by Frederick Lewis Allen

Credits
Producer: Michelle Buzgon/KRT
Designer: Ron Coddington/KRT; Adam Mark/KRT
Research: Diana Massaro/KRT; Chuck Myers/KRT
Photography: Library of Congress; United States Olympic Committee; National Park Service; The Discovery Channel; Andrew Holbrook; Fort Worth Star-Telegram; Imperial War Museum; PBS