The Metropolitan Museum of Art /

Mode of access: Internet.

The Collector's eye : the Ernest Erickson collections at the Brooklyn Museum /

Catalog of an exhibition held at the Brooklyn Museum, Mar. 27-May 18, 1987.

The South Kensington Museum : examples of the works of art in the museum and of the decorations of the building with brief descriptions.

Mode of access: Internet.

Staatsalmanak voor het Koninkrijk der Nederlanden.

Description based on surrogate of: 1992.

Museum and Library of the State historical society of North Dakota.

Mode of access: Internet.

List of additions to the natural history, antiquities, and prints of the British Museum in the years MDCCCXXXVI-MDCCCXXXIX.

Mode of access: Internet.

Jaarcijfers voor Nederland = Annuaire statistique pour les Pays-Bas /

Published for Centraal Bureau voor de Statistiek: 's Gravenhage : Algemeene Landsdrukkerij, 1929-1930; 's Gravenhage : Rijksuitgeverij dienst van de nederlandsche staatscourant, 1931-1934; 's Gravenhage : Drukkerij Albani, 1935-1943; Utrecht : W. De Haan, 1948-<1956>.

Annals of the Transvaal Museum. Annale van die Transvaal museum.

Dutch title varies: v.1-14, Apr. 1908-July 1932, Mededelingen.