In 1471 and 1844, respectively ...

The Large Turf, The Monumental Turf
Graphische Sammlung Albertina, Vienna, Austria. 

Self Portrait
Alte Pinakothek, Munich, Germany.

On this day, May 21, in 1471, Albrecht Durer was born. In 1844, Henri Rousseau was born.

The Sleeping Gypsy
The Museum of Modern Art, New York