On this day in psychology history:

1571 - Johannes Kepler was born. Kepler first proposed that the retina was the location of visual reception.

1791 - The state of Maryland first allocated funds for the care of individuals with mental illnesses.

1892 - The American Psychological Association held its first annual meeting at the University of Pennsylvania.

Learn more about events in the history of psychology in this special feature from the APA Monitor.

You can also search for events by dates or keywords at the APA Historical Database provided by the American Psychological Association and Central Washington University.