There were four in this time period. Wilson left office on March 4, 1921 and Harding was inaugurated. Harding died on August 2, 1923 and VP Coolidge became president. Coolidge was re-elected in 1924 and stayed in office until March 4, 1929 when Hoover was inaugurated.
Book TV After Words - 2005 1920 The Year of the Six Presidents was released on: USA: April 2007
Colombine - 1920 was released on: Germany: 7 December 1920 (Hamburg) USA: 5 May 1929 (New York City, New York)
High and Dizzy - 1920 was released on: USA: 11 July 1920 France: 14 December 1923 Finland: 31 March 1929
The Hawk's Trail - 1919 was released on: USA: 13 December 1919 USA: 20 December 1919 (episode 2) USA: 27 December 1919 (episode 3) USA: 3 January 1920 (episode 4) USA: 10 January 1920 (episode 5) USA: 17 January 1920 (episode 6) USA: 24 January 1920 (episode 7) USA: 31 January 1920 (episode 8) USA: 7 February 1920 (episode 9) USA: 14 February 1920 (episode 10) USA: 21 February 1920 (episode 11) USA: 28 February 1920 (episode 12) USA: 6 March 1920 (episode 13) USA: 13 March 1920 (episode 14) USA: 20 March 1920 (episode 15) Finland: 25 September 1922
The Land of Jazz - 1920 was released on: USA: December 1920
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The Diamond Master - 1929 was released on: USA: 3 February 1929 USA: 10 February 1929 (Episode 2) USA: 17 February 1929 (Episode 3) USA: 24 February 1929 (Episode 4) USA: 3 March 1929 (Episode 5) USA: 10 March 1929 (Episode 6) USA: 17 March 1929 (Episode 7) USA: 24 March 1929 (Episode 8) USA: 31 March 1929 (Episode 9) USA: 7 April 1929 (Episode 10)
The Fire Detective - 1929 was released on: USA: 3 March 1929 USA: 10 March 1929 (episode 2) USA: 17 March 1929 (episode 3) USA: 24 March 1929 (episode 4) USA: 31 March 1929 (episode 5) USA: 7 April 1929 (episode 6) USA: 14 April 1929 (episode 7) USA: 21 April 1929 (episode 8) USA: 28 April 1929 (episode 9) USA: 5 May 1929 (episode 10)
Queen of the Northwoods - 1929 was released on: USA: 21 May 1929 USA: 28 May 1929 (Episode 2) USA: 4 June 1929 (Episode 3) USA: 11 June 1929 (Episode 4) USA: 18 June 1929 (Episode 5) USA: 25 June 1929 (Episode 6) USA: 2 July 1929 (Episode 7) USA: 9 July 1929 (Episode 8) USA: 16 July 1929 (Episode 9) USA: 23 July 1929 (Episode 10)
The Black Book - 1929 was released on: USA: 21 July 1929 USA: 28 July 1929 (Episode 2) USA: 4 August 1929 (Episode 3) USA: 11 August 1929 (episode 4) USA: 18 August 1929 (episode 5) USA: 25 August 1929 (episode 6) USA: 1 September 1929 (episode 7) USA: 8 September 1929 (episode 8) USA: 15 September 1929 (episode 9) USA: 22 September 1929 (episode 10)
The Whirlwind - 1920 was released on: USA: 17 January 1920 USA: 24 January 1920 (episode 2) USA: 31 January 1920 (episode 3) USA: 7 February 1920 (episode 4) USA: 14 February 1920 (episode 5) USA: 21 February 1920 (episode 6) USA: 28 February 1920 (episode 7) USA: 6 March 1920 (episode 8) USA: 13 March 1920 (episode 9) USA: 20 March 1920 (episode 10) USA: 27 March 1920 (episode 11) USA: 3 April 1920 (episode 12) USA: 10 April 1920 (episode 13) USA: 17 April 1920 (episode 14) USA: 24 April 1920 (episode 15)
The Fatal Warning - 1929 was released on: USA: 15 February 1929 USA: 22 February 1929 (episode 2) USA: 1 March 1929 (episode 3) USA: 8 March 1929 (episode 4) USA: 15 March 1929 (episode 5) USA: 22 March 1929 (episode 6) USA: 29 March 1929 (episode 7) USA: 5 April 1929 (episode 8) USA: 12 April 1929 (episode 9) USA: 19 April 1929 (episode 10) Netherlands: 11 December 1931