August Klett (Pseudonym: August Klotz) (1866 in Heilbronn-1928) was a German schizophrenic outsider artist and one of the "schizophrenic masters" profiled by Hans Prinzhorn in his field-defining work Artistry of the Mentally Ill.
Karl Brendel is the pseudonym of Karl Genzel (1871 – 1925), a schizophrenic outsider artist and one of the "schizophrenic masters" profiled by Hans Prinzhorn in his field-defining work Artistry of the Mentally Ill (1923, in German; English edition 1972).
They have taken their name from Dr Hans Prinzhorn, who collected art by mentally ill patients under his care.
Hans Christian Andersen | Hans Holbein the Younger | Hans Zimmer | Hans Werner Henze | Hans Memling | Hans Pfitzner | Hans Küng | Hans Conried | Hans Knappertsbusch | Hans Magnus Enzensberger | Hans-Dietrich Genscher | Hans Blix | Hans Zender | Hans Scholl | Hans Hofmann | Hans Christian Ørsted | Hans Raj Hans | Hans Habe | Hans Baldung | Baron Hans Heinrich Thyssen-Bornemisza | Hans von Ohain | Hans van Manen | Hans Urs von Balthasar | Hans Sloane | Hans Rosbaud | Hans-Georg Backhaus | Hans-Adam II, Prince of Liechtenstein | Yuvraj Hans | Hans von Halban | Hans von Bülow |
In 1839, Browne had initiated one of the first collections of art by mental patients in institutions, gathering a large amount of work which he had bound into three volumes, in many ways a forerunner of Hans Prinzhorn's Artistry of the Mentally Ill and the academic study of outsider art (art brut).