Alex, Ben, Best Regards: Recovering the Art of Soulful Letter Writing (Scandinavia Publishing House, 2003)
Blumenthal, Lassor, The Art of Letter Writing (Putnam Pub Group Library, 1976)
Decke, William Merrill, Epistolary Practices: Letter Writing in America before Telecommunications (University of North Carolina Press, 1998)
Fraser, Antonia (ed.), Love Letters: An Illustrated Anthology (Crescent Books, 1995)
Heller, Bernard, The 100 Most Difficult Business Letters You’ll Ever Have to Write, Fax or Email (HarperBusiness, 1994)
Holland, Merlin and Hart-Davis, Rupert (eds), The Complete Letters of Oscar Wilde (Fourth Estate, 2000)
Kenyon, Olga, 800 Years of Women’s Letters (Sutton Publishing Ltd, 2003)
Kermode, Frank and Anita (eds), The Oxford Book of Letters (OUP, 2003)
King, Martin Luther, Jr., Letter from the Birmingham Jail (HarperCollins, 1994)
Klauser, Henriette Anne, Put your Heart on Paper (Bantam USA, 1995)
MacNiven, Ian (ed.), The Durrell-Miller Letters, 1935-80 (Faber and Faber, 1988)
Maggi, Rosalie, Great Letters for Every Occasion (Prentice Hall, 1999)
Meyer, Harold E., Lifetime Encyclopedia of Letters (NYIF, 1991)
O’Sullivan, Vincent and Scott, Margaret (eds), The Collected Letters of Katherine Mansfield: Volume IV: 1920–1921 (Clarendon Press, 1996)
Peterson, Merrill D. (ed.), The Portable Thomas Jefferson (Penguin, 1977)
Pool, Gail (ed.), Other People’s Mail: An Anthology of Letter Stories (University of Missouri Press, 1999)
Powers, Lyall H.(ed.), Henry James and Edith Wharton: Letters: 1900–1915 (Scribner, 1990)
Schuster, Lincoln M. (ed.), The Treasury of the World’s Great Letters: From Ancient Days to Our own Time (Simon & Schuster, 1960)
Twain, Mark, Letters from the Earth (Harper Perennial, 2004)
Washington, Peter Love Letters (Everyman, 1996)
Williams, Jennifer, The Pleasures of Staying in Touch: Writing Memorable Letters (William Morrow & Company, 1998)
See here: Robin Flies Again: Letters Written by women of Goucher College, class of 1903, http://meyerhoff.goucher.edu/library/robin/
See here: Letter to Laura Waugh dated 7 January 1945 by Evelyn Waugh. Copyright © The Estate of Laura Waugh, 1980, used by permission of The Wylie Agency (UK) Limited
See here: Lion Feuchtwanger an Bewohner seines Hause: Offener Brief an die Bewohner meines Hauses Mahlerstr. 8 in Berlin. In: Pariser Tageblatt 463, 20.3.1935. © Aufbau Verlag GmbH & Co. KG, Berlin 1999
See here: Courtesy of the Albert Einstein Archives, The Hebrew University of Jerusalem
See here: Letter from Oscar Wilde to Lord Alfred Douglas, in Merlin Holland and Rupert Hart-Davis (eds) The Complete Letters of Oscar Wilde © Merlin Holland 2000
See here: Letters reproduced by kind permission of Cynthia Gray, www.collectiveexperience.org
See here: Extract from Letters from the Earth by Mark Twain © by Richard A. Watson and J.P. Morgan Chase Manhattan Bank as trustees of the Mark Twain Foundation
See here: Ballou, Sullivan. Copy of a letter by Sullivan Ballou to his wife Sarah [transcriber unknown], 14 July 1861 [date of copy unknown, 19th c.], Sullivan Ballou Papers, MSS 277, Box 1, Folder 10, the Rhode Island Historical Society.