The Folklore of Discworld
Terry Pratchett and Jacqueline Simpson
First edition
UK hbk: Doubleday, 16,650 copies on 8 September 2008 (978-0-385-61100-8)
Polish: Folklor Świata Dysku, trs. Piotr W. Cholewa, Prószynski i S-ka, 20 October 2015 (978-83-8069-150-6)
Second edition. Revealing additional material on Unseen Academicals
UK pbk: Corgi, 8 October 2009 (978-0-552-15493-2)
Czech: Folklor Zemĕplochy, trs. Jan Kantůrek, Talpress, 2010 (978-80-7197-382-9)
German: Mythen und Legenden der Scheibenwelt, trs. Gerald Jung, Goldmann, September 2011 (978-3-442-47367-0)
Third edition], ‘Updated to include material on the Discworld books up to Raising Steam’
UK pbk: Corgi, 13 March 2014 (978-0-552-15493-2) [same ISBN as 2nd edition]
USA pbk: Anchor, 25 March 2014 (978-0-8041-6903-5; eBook 978-0-8041-6901-1)
Elves: Nasty or Nice?
A Treatise by Jaqueline [sic] Simpson, Foreword by Terry Pratchett, printed, and published by the Discworld Emporium for the 2010 Discworld Convention, 27-30 August 2010, in an edition of 500 copies. No ISBN