In 2003, the monograph 'Dolf Henkes - Idiosyncratic and intangible' was published: Gepke Bouma, Paul van de Laar, Rien Vroegindeweij IDIOSYNCRATIC AND INTANGIBLE - DOLF HENKES (1903-1989)   2003 TDS publishers Schiedam   In cooperation with the Dolf Henkes Centennial Foundation   ISBN 90-5981-003-1 On sale in bookshops and in the museum shops of Museum Boijmans Van Beuningen, Maritiem Museum Rotterdam, Chabot Museum Rotterdam and Historisch Museum Rotterdam. © Works by Dolf Henkes: Instituut Collectie Nederland, Rijswijk © 2003 Dolf Henkes Centennial Foundation The publication of the book and its CD-ROM was realized thanks also to support from: Stichting Bevordering van Volkskracht, Erasmusstichting, Prins Bernhard Cultuurfonds Rotterdam, Harten fonds Rotterdam, G. Ph. Verhagen-stichting, VSB fonds Rotterdam, Stichting Henkes, Instituut Collectie Nederland and Frans Eikenbroek, director of TDS printmaildata, Schiedam. Thanks are due to CAPI-Lux Vak, Rotterdam.