Swan Song - Etext at Project Gutenberg. - http://www.gutenberg.org/etext/1753
Uncle Vanya - Etext at Project Gutenberg. - http://www.gutenberg.org/etext/1756
Plays by Anton Chekhov, Second Series - Julius West translation. Eight dramas, including "The Three Sisters" and "The Cherry Orchard." In plain text, with or without accented characters. Zip files also available. At Project Gutenberg. - http://www.gutenberg.org/etext/7986
The Sea-Gull - Etext at Project Gutenberg. - http://www.gutenberg.org/etext/1754
Ivanoff - Etext at Project Gutenberg. - http://www.gutenberg.org/etext/1755
Letters of Anton Chekhov - Constance Garnett translation. In plain text, or as a zip file, at Project Gutenberg. - http://www.gutenberg.org/etext/6408
The Boor - Complete text of the play by Anton Chekhov. - http://www.theatrehistory.com/plays/boor.html