The Kenneth W. Rendell Collection on the Detection of Forged Handwriting Donated to the Grolier Club
- by Announcement, Rare Book Hub staff
The Grolier Club Library is pleased to announce the receipt of a major gift, the Collection on the Detection of Forged Handwriting, which is the most important and comprehensive collection on the subject known to exist anywhere. The Gift is from club members Kenneth W. Rendell and Shirley McNerney.
Rendell, a leading dealer in historical letters and documents, has exposed numerous famous forgeries such as the Hitler Diaries fraud, Mussolini’s diaries, the Mormon forgeries and murders [with forger Mark Hofmann], and Jack the Ripper’s forged diary. This collection was formed over a 60-year period and consists of thousands of forgeries, facsimiles of handwriting, reference books, and archival files concerning major cases in which Rendell has been involved.
The collection is wide-ranging, encompassing historical letters and manuscripts from the early 17th century to the modern day. Classic forgeries of Shakespeare, Robert Burns, Schiller, Washington, Lincoln, Franklin, Berlioz, Wagner, Poe and numerous others are included. Rendell made every effort over his long and distinguished career to acquire original examples of past forgers from many sources, including the files of dealers such as Charles Hamilton, Mary Benjamin and Goodspeeds.
The gathering together of so many “original” forgeries – often destroyed and notoriously difficult to collect – alongside genuine examples of handwriting and a specialized reference library, gives the collection unparalleled value for study. Thanks to the generosity of Rendell and McNerney, these materials will be made widely available to researchers, scholars, librarians, Grolier Club members, dealers, and the public for the first time.
The collection consists of:
10,000 facsimiles of the handwriting of prominent persons from the 17th to the 20th centuries
160 forgeries created to deceive, usually for profit
400 “authorized forgeries” intended to deceive people into thinking they are genuinely signed, usually by an authority figure (e.g., members of royalty, American presidents)
75 “mistaken identities,” in which two different people with the same name living in the same place and time are confused with each other (e.g., two people named John Adams”)
29 facsimiles frequently mistaken as genuine (Longfellow, Twain, etc.)
140 reference books on forgery detection
8 linear feet of archival files relating to major forgery cases in which Mr. Rendell was involved, including the Hitler diaries, the Mussolini diary, the Jack the Ripper diary, the Mormon forgeries, the John F. Kennedy/Cusak fraud, and the Elvis Presley musical manuscript forgeries
Research files and photographs compiled by Rendell for his book, Forging History: The Detection of Forged Historical Manuscripts (University of Oklahoma Press, 1994)
The gift of the Collection on the Detection of Forged Handwriting also includes a monetary gift to enhance accessibility to the collection through professional cataloguing. Through their donation to the Grolier Club, Rendell and McNerney have ensured the preservation of this material is a publicly accessible institution, where it can be studied by anyone with an interest in the history, analysis, and detection of forged documents. We are grateful to them for their foresight and extraordinary generosity.
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Book of Hours.- Heures a lusaige de Romme, printed on vellum, with 14 full-page illuminated miniatures, Paris, N. Higman for J. de Brie, [c.1521]. £20,000-30,000
Forum, Mar. 26: France.- Book of Hours, perhaps Use of the Abbey of Saint-Gildas de Rhuys, with thirteen miniatures surviving from an original cycle of at least twenty, [c. 1430]. £15,000-20,000
Forum, Mar. 26: Milton (John). Paradise lost. A Poem in Ten Books, first edition, Pforzheimer's sixth state, S. Simmons, 1669. £8,000-12,000
Forum, Mar. 26: Blake (William). Illustrations of the Book of Job, one of 215 first issue "Proof" copies, this one of 65 copies on "French" paper, Published by the Author, March 8, 1825 [but March, 1826]. £15,000-20,000
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Christie (Agatha). The ABC Murders, first edition, The Crime Club, 1936. £15,000-20,000
Forum, Mar. 26: Halley (Edmund). Astronomiae Cometicae Synopsis, in Philosophical Transactions of the Royal Society, no. 297, pp.1882-99, March 1705. £10,000-15,000
Forum, Mar. 26: Haytham (Ibn al) [known as Alhazen]. Opticae Thesaurus...Item Vitellonis Thuringopoloni libri X..., first edition, Basel, August, 1572. £20,000-30,000
Forum, Mar. 26: Kepler (Johannes). Dioptrice seu demonstratio eorum quae visui & visibilibus propter conspicilla non ita pridem inventa accidunt, first edition, Augsburg, David Frank, 1611. £12,000-18,000
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Botany.- Andrews (H.C.) Coloured Engravings of Heaths, 4 vol. in 2, first edition, [1710,--94]-1802-1809-[1830]. £10,000 - £15,000.
Forum, Mar. 25: Butterflies.- Cramer (Pierre) and Caspar Stoll. De Uitlandsche Kapellen voorkomende in de drie Waereld-Deelen…,, 5 vol., Amsterdam & Utrecht, 1779-91. £8,000 - £12,000.
Forum, Mar. 25: Voyages.- Darwin (Charles) and others. Narrative of the Surveying Voyages of His Majesty's Ships Adventure and Beagle, 3 vol. in 4, including Appendix to vol.2, first edition, 1839. £8,000 - £12,000.
Forum, Mar. 25: Butterflies.- de Graaf (Willem Diederik Vincent). [Inlandsche Kapellen in beeld], 170 fine original watercolours, [Enkhuizen], [1800-40]. £8,000 - £12,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Birds.- Dresser (Henry Eeles). A History of the Birds of Europe, 9 vol., including supplement, first edition, by the author, 1871-96. £6,000 - £8,000.
Forum, Mar. 25: Zoology.- Felines.- Elliot (Daniel Giraud). A Monograph of the Felidæ or Family of the Cats, first edition, for the Subscribers, by the Author, [1878]-1883. £25,000 - £30,000.
Forum, Mar. 25: Birds.- Frisch (Johann Leonard). Vorstellung der Vögel Deutschlandes, 2 vol., first edition, Berlin, Friedr. Wilhelm Birnsteil, [1736]-1763. £40,000 - £60,000.
Forum, Mar. 25: Birds.- Gould (John). The Birds of Great Britain, 5 vol., first edition, by the author, 1862-1873. £30,000 - £40,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Pomology.- France.- Poiteau (A.) Pomologie Française. Recueil des Plus Beaux Fruits cultivés en France, 4 vol., Paris, 1846. £30,000 - £40,000.
Forum, Mar. 25: Botany.- [Robin (Jean)]. Histoire des Plantes, nouvellement trouvées en l'Isle Virgine…,, 1620; with Geoffrey Linocier L'Histoire des plantes, second edition, 1619-20. £3,000 - £4,000.
Forum, Mar. 25: Asia.- Japan.- Siebold (P.F. von). Nippon. Archiv zur Beschreibung von Japan, 7 parts in 6 vol., first edition, Leyden, [1832]-1852. £35,000 - £45,000.
Forum, Mar. 25: Asia.- Valentijn (Francois). Oud en Nieuw Oost-Indiën..., 5 vol. in 8, first edition, Dordrecht [&] Amsterdam, 1724-26. £8,000 - £12,000.
Forum, Mar. 25: Botany.- Australia.- Redouté (P.J.).- Ventenat (Étienne Pierre). Jardin de la Malmaison, 2 vol.,, Paris, 1803-04[-05]. £30,000 - £40,000.