sentences:  Dawson left many of his pictures to Stamford School but although a number of etchings and watercolours still decorate the walls of the school, not all were stored or displayed properly and some canvasses were even painted over by pupils.A retrospective of his work at Stamford Museum closed on 26 January 2008.Georgetown University Library in 2009 hosted an exhibition of his marine views called Etched by the Sea.