Nathan Katz

Who is Nathan Katz?

Nathan Katz: The Hague. Dealer. Sold to all the Germans...
source: Interrogations: Miedl Case (Alois Miedl)Restitution Research Records NARA M1946
https://www.fold3.com/image/270014556

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If one googles Nathan Katz, Wikipedia pages for a  professor and a poet of this name will appear. But if one is searching for the Dutch art dealer, one must look further. Katz is a very common name, and confusion is a problem. In this post we attempt to bring together a few elements to help identify Nathan Katz the art dealer, who owned the  Dutch dealership Firma D. Katz in Dieren, Netherlands.

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Nathan Katz: Art Market Network according to the 1946 Art Looting Investigation Unit Red Flag Names

"Katz, Nathan. The Hague, Lange Voorhuit 35 Dieren, bei Arnhem. Prominent dealer. Worked principally with Hofer, Posse and Miedl, as well as Lange, Haberstock, Boehler and other German buyers. Two brothers in the Western Hemisphere: Benjamin Katz, Hotel Dauphin, New York and Abraham Katz, 18 Pietermaai, Wilhelmstad, Curacao."

Fritz Mont, Frederick Mondschein and Galerie Sanct Lucas

What does it mean to find the names Fritz Mont, Fritz Mondschein, Frederick Mondschein or Frederick Mont in the provenance of an artwork?

The Getty has a record for MONT Inc

biography

Born in Vienna in 1894, Frederick Mont, also known as A. F.  Mondschein or Frederick Mondschein or Adolf Fritz Mondschein, emigrated to the United States in the 1930s. Mont aka Mondschein owned the Galerie Sanct Lucas and counted among his clients many US museums. He had close relationships with American dealer Victor Spark (1898-1991) and the Newhouse Galleries. Mont played an important role in the transatlantic art trade. The names Mont, Mondschein, and Sanct Lucas appear in several artworks listed on NEPIP, the Nazi Era Provenance Research Portal.

(source: Archives Directory for the History of Collecting in America)
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see also:
Galerie Sanct Lucas
Newhouse Galleries
Spark, Victor David, 1898-1991