George Orwell.
Animal Farm: A Fairy Story.
New York: Signet Classics / The New American Library, Inc. / Times Mirror Company, no date (1970s).
First U.S. edition: New York: Harcourt Brace Jovanovich, Inc., 1946.
First edition: London: Secker & Warburg, 1945.
Some items related to Animal Farm:
While I usually provide links either for the edition of a book I've read or for the currently in-print edition, most of the books I read having only a few editions, in the case of Animal Farm there are so many editions so readily available that I will omit links to specific editions. Also, it is not clear to me which editions contain Orwell's prefaces (lacking in the Signet Classics edition).
Animal Farm, Wikipedia (many useful External links here)
Animal Farm in popular culture, Wikipedia
Orwell's Preface to Animal Farm
Animal Farm research guide, George Orwell Novels
Louis Menand, "Honest, Decent, Wrong: The Invention of George Orwell," The New Yorker, 27 January 2003. A copy of this essay is here (about three quarters of the way down the page).
Margaret Atwood, Orwell and me, The Guardian, 16 June 2003. A copy of this essay is also available here (about one third of the way down the page).
D.J. Taylor, "Another piece of the puzzle: Letters throw new light on Orwell's first wife," The Guardian, 10 December 2005. A copy of this essay is also available here. The recently found letters by Orwell's wife Eileen O'Shaughnessy indicate that her sensibility had great influence on Animal Farm.
Some George Orwell links:
George Orwell, Wikipedia
George Orwell bibliography, Wikipedia
The Orwell Prize
Orwell, George, Open Directory Project
Charles' George Orwell Links
George Orwell Novels, website subtitle: "The books, essays and letters of author George Orwell" (so, despite website name, not just about his novels; website has many of Orwell's texts)
George Orwell, The Guardian
Search for George Orwell at the London Review of Books
Terry Eagleton, Reach-Me-Down Romantic, London Review of Books, Vol. 25, No. 12, 19 June 2003. A copy of this essay is also available here (about one third of the way down the page).
A semi-organized collection of webpages with much material related to George Orwell collected by Arlindo Correia:
Orwell Biographies and Criticism:
Tanya Agathocleous. George Orwell: Battling Big Brother. Oxford University Press USA, 2000.
http://www.amazon.com/George-Orwell-Battling-Brother-Portraits/dp/0195121856/
Gordon Bowker. George Orwell. Little, Brown Book Group, 2003.
http://www.amazon.com/George-Orwell-Gordon-Bowker/dp/0349115516/
Bernard Crick. George Orwell: A Life. Martin Secker & Warburg Ltd, 1981.
http://www.amazon.com/George-Orwell-Life-Bernard-Crick/dp/0436114518/
Christopher Hitchens. Why Orwell Matters. Basic Books, 2002.
http://www.amazon.com/Why-Orwell-Matters-Christopher-Hitchens/dp/0465030505/
Jeffrey Meyers. Orwell: Wintry Conscience of a Generation. W. W. Norton & Company, 2001
http://www.amazon.com/Orwell-Conscience-Generation-Jeffrey-Meyers/dp/0393322637/
Jeffrey Meyers. Orwell: Life and Art. University of Illinois Press, 2010.
http://www.amazon.com/Orwell-Life-Art-Jeffrey-Meyers/dp/0252077466/
John Rodden, editor. The Cambridge Companion to George Orwell. Cambridge University Press, 2007.
http://www.amazon.com/Cambridge-Companion-George-Companions-Literature/dp/0521675073/
John Rodden. The Unexamined Orwell. University of Texas Press, 2011.
http://www.amazon.com/Unexamined-Orwell-Literary-Modernism-Series/dp/0292725582/
John Rodden and John Rossi. The Cambridge Introduction to George Orwell. Cambridge University Press, 2012.
http://www.amazon.com/Cambridge-Introduction-George-Introductions-Literature/dp/052113255X/
D.J. Taylor. Orwell: The Life. Chatto & Windus, 2003.
http://www.amazon.com/Orwell-D-J-Taylor/dp/0701169192/
John Thompson. Orwell's London. Fourth Estate, 1984; Schocken, 1985.
http://www.amazon.com/Orwells-London-John-Thompson/dp/0805239650/
George Woodcock. The Crystal Spirit: A Study of George Orwell. Little, Brown, 1966; reprint Black Rose Books, 2005.
http://www.amazon.com/The-Crystal-Spirit-George-Orwell/dp/1551642689/
Several of the webpages by Arlindo Correia contain reviews of Orwell biographies.