Analysis of information sources in references of the Wikipedia article "Galerie Nierendorf" in English language version.
During the war, Dr. Reichel and his wife, Malvine, were forced to close their business and give up their family home and another property. Their oldest son was deported to Poland, where he was killed, and Malvine was sent to the Theresienstadt concentration camp in 1943. Dr. Reichel died of natural causes that same year. Kallir ended up in New York, where he sold "Two Nudes (Lovers)" to the Nierendorf Gallery for $1,500 in 1945. The painting traded hands two more times before it was bequeathed to the museum in 1973.
