From: The Metropolitan Museum of Art. 

"Beginning in 1891 Chase taught at a summer art school in Shinnecock, Long Island. The following year, he and his family moved into their new summer home, Shinnecock Hall, which had been designed and built by the well-known firm of McKim, Mead and White. Chase taught at the beach resort until 1902, conducting open-air classes for as many as a  hundred students each summer. This work is characteristic of the outdoor scenes that Chase painted during the 1890s on Long Island beaches." 
(The met) 
 
 

Notes: 

• More on William Merrit Chase