1920
John Barrymore stars in the dual-leading role in the film Dr. Jekyll and Mr. Hyde.
1921
Sothern and Marlowe perform together in a production of The Merchant of Venice in New York.
1922
Hamlet is performed at the Sam Harris in New York, with John Barrymore in the title role. His seminal performance is highly praised.
1923
John Barrymore appears as Hamlet at the Manhattan Opera House.
1923
Groucho Marx interrupts his own performance at the Walnut Street Theatre to announce to the audience that President Harding had died.
1925
Ellen Terry is awarded the Dame Grand Cross of the Order of the British Empire.
1928
Actress Ellen Terry dies.
1930
Othello is performed at the Savoy in London on 19th May, with Paul Robeson taking the title role. He is the first black actor to perform on a London stage since Ira Aldridge in the mid-1800s.
1933
Edward Sothern dies from pneumonia.
1935
Laurence Olivier stars in a production of Romeo and Juliet, in which he appears as both Romeo and Mercutio, alternating the roles with fellow actor John Gielgud.
1936
Laurence Olivier starts an affair with actress Vivien Leigh.
1939 - 1945
World War II.
1939
Laurence Olivier stars in the film Wuthering Heights.
1940
Laurence Olivier and Vivien Leigh marry.
1942
American actor John Barrymore dies after collapsing while recording a line for a radio production of Romeo and Juliet.
1943
Paul Robeson plays Othello in a Margaret Webster production presented by the Theatre Guild. Robeson was the first African American actor to portray Othello in a major production since 1860.
1948
Laurence Olivier stars in and directs a British film adaptation of Hamlet.
1948
Actress Viola Allen dies in New York.
1950
Julia Marlowe dies in New York, aged 85.
1952
The Mousetrap opens at the Ambassadors Theatre on the 25 November 1952.
1955
Laurence Olivier stars in and directs a film adaptation of Richard III.
1960
Laurence Olivier and Vivien Leigh get divorced.
1960
Oliver! the musical version of Charles Dickens famous novel Oliver Twist opens at the New Theatre on 30 June 1960.
1961
The Royal Shakespeare Company is formed.
1961
The Sound of Music opens at the Palace Theatre on the 18 May 1861.
1963
Laurence Olivier becomes the first director of the new National Theatre. The theatre's first production is Hamlet, starring Peter O'Toole and directed by Olivier.
1964
The Walnut Street Theatre is designated a National Historic Landmark.
1965
Laurence Olivier stars in and directs a film adaptation of Othello, alongside Maggie Smith who plays Desdemona.