GRIL NACO contribution (n.d.)
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LC data base, 11/15/83 (hdg.: Muller (Frederik) en Compagnie; usage: Veilingzalen Frederik Muller & Co.) LC manual auth. cd. (Since 1899, Frederik Muller & Co. was headed by Anton W.H. Mensing (d. 1936); later related hdg.: Mensing en Zoon)
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Library of Congress Authorities online (2002-) http://id.loc.gov/authorities/names/n83132153
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Mensing & fils. Collection de feu M. Ant. W. M. Mensing, 1939?: t.p. (Mensing & fils (Frederik Muller & Cie.), Amsterdam)
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Tweede voorjaarsveiling 1944 van oude en moderne schilderijen, aquarellen, tekkeningen, etsen, gravures, antiquiteiten ..., 1944: t.p. (Frederik Muller & Co.; Mensing & Zoon) | | | |