found: Příjmení.cz, January 15, 2016(Important personalities with the surname Tyson; L. Tyson (1867-1957); German art historian, born in New York, director of the museum in Dresden; he dealt mainly with engravings; Pseudonym; Hans Wolfgang Singer (real name))
found: Wikipedia, January 15, 2016(Hans Wolfgang Singer (art historian); born September 16, 1867 in New York City, New York; died May 30, 1957 in Dresden; German art historian; Hans Wolfgang Singer was the son of the musician and composer Otto Singer (1833-1894); he studied German literature and art history; after obtaining a Bachelor of Arts degree, he studied in Munich, Berlin, and Leipzig; he received a doctorate in 1891; from 1891 to 1932 he worked at the Kupferstichkabinett Dresden (an art museum for drawing, printmaking and photography), first as a research assistant, then as assistent director, and finally as curator; in 1903 he was awarded the title of professor; Singer undertook numerous study trips through Europe and published art history articles in German and English journals, often under the pseudonym "L. Tyson ")
found: Deutsche National Bibliothek, January 15, 2016(Singer, Hans Wolfgang, 1867-1957; male; born in New York, NY; died in Dresden; museum director, art historian; worked for Kupferstich-Kabinett (Dresden); other names: Singer, Hans-Wolfgang; Tyson, L. (Pseudonym); Singer, Hans; Singer, Hans W.; Singer, H. W.; Singer, Hans Wolfg.; Singer, Juan W.)
