Art historians, provenance researchers, museum curators, scholars of the Holocaust and the art market, If you would like to know whether a person in a provenance is a Holocaust victim, a looting Red Flag name, a Nazi party member, or a persecuted person, here is a Sparql query in Wikidata that can help:
https://w.wiki/7gg3
Clicking on the above link runs a Wikidata Sparql query.
Results as of October 23, 2023
Wikidata Name Description status http://www.wikidata.org/entity/Q117451 Albert Skira Swiss magazine publisher and art dealer (1904-1973) ALIU Red Flag http://www.wikidata.org/entity/Q47309996 Adolf Wuester German art dealer, artist, member of the ERR Nazi looting organisation Reichsleiter Rosenberg Taskforce(1888-1972) ALIU Red Flag http://www.wikidata.org/entity/Q69010980 Hugo Engel German art dealer, gallery owner ALIU Red Flag http://www.wikidata.org/entity/Q47310686 Paul Cailleux French art dealer (1884-1964) ALIU Red Flag http://www.wikidata.org/entity/Q47310876 Jean Paul Louis Duthey French art dealer on ALIU Red Flag List ALIU Red Flag http://www.wikidata.org/entity/Q20730464 Étienne Bignou French art dealer (1891-1950) ALIU Red Flag http://www.wikidata.org/entity/Q18639521 Alois Miedl German art dealer (1903-1990) ALIU Red Flag http://www.wikidata.org/entity/Q100708933 Martin Fabiani French art dealer (1899-1989) ALIU Red Flag http://www.wikidata.org/entity/Q3261434 Louis Carré French art dealer (1897-1977) ALIU Red Flag http://www.wikidata.org/entity/Q27908664 Paul Pétridès art dealer (1901-1993), convicted of selling stolen paintings ALIU Red Flag http://www.wikidata.org/entity/Q47035126 Gottfried Tanner Swiss art dealer, president Swiss art dealers association (1880–1958) ALIU Red Flag http://www.wikidata.org/entity/Q96297 Emil Georg Bührle Swiss businessman of German origin, arms industrialist and art collector (1890-1956) ALIU Red Flag http://www.wikidata.org/entity/Q13512883 Otto Paul Lindpaintner German tennis player and art dealer (1883-1969) ALIU Red Flag http://www.wikidata.org/entity/Q46442189 Alice Manteau art dealer ALIU Red Flag http://www.wikidata.org/entity/Q57552668 Josef Mühlmann art historian, art dealer, involved in Nazi art looting (1866–1972) ALIU Red Flag http://www.wikidata.org/entity/Q47487054 Vitaly Bloch art historian, purchasing agent and adviser to Muehlmann, Goepel (1900-1975) ALIU Red Flag http://www.wikidata.org/entity/Q66087839 Klara Veraguth Swiss art collector and art dealer ALIU Red Flag http://www.wikidata.org/entity/Q66619187 Raphael Stora art dealer (1888-1963) ALIU Red Flag http://www.wikidata.org/entity/Q56218741 Alexander Ball Art dealer ALIU Red Flag http://www.wikidata.org/entity/Q47490292 Roger Louis Adolphe Dequoy important collaborationist art dealer ALIU Red Flag http://www.wikidata.org/entity/Q63981732 Jean Schmit art dealer, antique dealer (1895-1975) ALIU Red Flag http://www.wikidata.org/entity/Q55747441 Dirk Albert Hoogendijk Dutch art dealer, gallerist (1895-1975) ALIU Red Flag http://www.wikidata.org/entity/Q19753824 Eduard Plietzsch German art art dealer, co-director Galerie Van Diemen, member Nazi looting org Dientstelle Muehlmann in Holland (1886 - 1961) ALIU Red Flag http://www.wikidata.org/entity/Q1350820 Erhard Göpel German art historian, Hitler's Linz agent (1906-1966) ALIU Red Flag http://www.wikidata.org/entity/Q30034424 Yves Perdoux French art dealer investigated for collaboration in WWII ALIU Red Flag http://www.wikidata.org/entity/Q824677 Bernhard A. Böhmer German art dealer used by the Third Reich, sculptor and painter (1892-1945) ALIU Red Flag http://www.wikidata.org/entity/Q47487032 Raymond Nacenta French art dealer, art historian ALIU Red Flag http://www.wikidata.org/entity/Q57268310 Étienne Ader French art dealer and auctionneer (1912- ALIU Red Flag http://www.wikidata.org/entity/Q1308305 Maria Almas-Dietrich art dealer, personal friend of Hitler (1892-1971) ALIU Red Flag http://www.wikidata.org/entity/Q59100120 Allen Loebl art dealer, Kleinberger in France ALIU Red Flag http://www.wikidata.org/entity/Q105306335 Karl Legat German art dealer resident in Holland (1902-1953) ALIU Red Flag http://www.wikidata.org/entity/Q19429021 Theodor Fischer Swiss art dealer, key figure in auctioning looted art ALIU Red Flag http://www.wikidata.org/entity/Q16185206 Kurt Walter Bachstitz Austrian-Dutch Art Dealer (1882-1949) ALIU Red Flag http://www.wikidata.org/entity/Q47310030 Philippe Adrion French painter and art dealer (1889-1953) ALIU Red Flag http://www.wikidata.org/entity/Q47487008 Jean Charpentier French art gallery owner ALIU Red Flag http://www.wikidata.org/entity/Q15431273 Karl Buchholz German art dealer authorized by Nazis to sell looted art, gallery owner, bookseller (1901-1992) ALIU Red Flag http://www.wikidata.org/entity/Q71987689 Alfred Daber art dealer ALIU Red Flag http://www.wikidata.org/entity/Q28977099 Johannes Hinrichsen art dealer, early buyer for Goering (1884-1971) ALIU Red Flag http://www.wikidata.org/entity/Q55627623 Herbert Wiedt German art dealer working in Holland ALIU Red Flag http://www.wikidata.org/entity/Q18602666 Walter Andreas Hofer German art plunderer and dealer on behalf of the Nazis, Director of the Goering Collection (1893-1975) ALIU Red Flag http://www.wikidata.org/entity/Q19766281 Walter Bornheim One of Goering’s most important buyers in France.
