Library of Congress
Authorities & Vocabularies
found: Author's Dutch drawings from the collection of Dr. C. Hofstede de Groot, 1967, 1968.
found: Miscellanea Humbert de Superville, 1997: t.p. (Jacob Bolten)
found: World Wide Web, Sept. 10, 1997: Leiden University homepages (J. Bolten, Dept. of Art History; Prof. dr. Jaap Bolten)
found: Info. converted from 678, 2012-10-02 (b. 1934)