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Theodore Roosevelt, Woodrow Wilson, Warren Harding, Calvin Coolidge, Herbert Hoover, and Franklin D. Roosevelt
David Pietrusza's

1920:
The Year of the Six Presidents

A Selection of the History Book Club
Basic Books                                                                                ISBN # 0786716223
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C-SPAN's BookTV
1920: The Year of the
Six Presidents
Author David
Pietrusza on C-SPAN
David Pietrusza on C-SPAN's BookTV (After Words)
Ann Compton and David Pietrusza on After Words
Ann Compton Interviewing David Pietrusza on After Words
David Pietrusza on BookTV's After Words