Simplify the following text for a Grade 6 native English-speaking person.
Original: Mary Stevenson Cassatt ( kÉ Ë sÃ t ; May 22 , 1844-June 14 , 1926 ) was an American painter and printmaker .
Simplified: Mary Stevenson Cassatt ( May 22 , 1844 â `` June 14 , 1926 ) was an American artist .