Analysis of information sources in references of the Wikipedia article "Hugo Perls" in English language version.
The Berlin dealer Paul Glaser made a statement during the trial of the Hamburg collector Elsa Wolf-Essberger against her former picture dealer Hugo Perls, confirming that he and Perls had 'in the course of several years' acquired 'about 8 van Goghs from Wacker.' They had not been taken in commission but bought straight out. Indeed, Perls owned 11 of the Wacker fakes
Provenance. - with Rudolf Weigel, Leipzig. [Schuchardt 1871 C, no. 342] - (Possibly) Hofrath Keil, Leipzig. - Raphael Eisenmann (c. 1821-?), Berlin, and by descent to - Margarete Eisenmann (1868-1942), Berlin, by whom sold under duress to the Reichskanzlei, Berlin, as partial payment of discriminatory taxes, after November 1938. - H. W. Lange; Sotheby's, London, 23 March 1949, lot 102 (£700 to Drown). with Hugo Perls, New York. - with Knoedler, New York, acquired from the above, 5 May 1954 (inv. no. A5708) and jointly owned with Rudolf Heinemann, New York.
Provenance. - with Rudolf Weigel, Leipzig. [Schuchardt 1871 C, no. 342] - (Possibly) Hofrath Keil, Leipzig. - Raphael Eisenmann (c. 1821-?), Berlin, and by descent to - Margarete Eisenmann (1868-1942), Berlin, by whom sold under duress to the Reichskanzlei, Berlin, as partial payment of discriminatory taxes, after November 1938. - H. W. Lange; Sotheby's, London, 23 March 1949, lot 102 (£700 to Drown). with Hugo Perls, New York. - with Knoedler, New York, acquired from the above, 5 May 1954 (inv. no. A5708) and jointly owned with Rudolf Heinemann, New York.