Childe Hassam is American painter and an impressionism painter. The most impressive paintings of Childe Hassam are the series of "flag", on one of The White House walls, there is one oil painting named "The Avenue in the Rain" painted by Childe, this would remaind you of one of Claude Monet paintings named "The Rue Saint Denis". You can see a lot of air between your eyes and objects. If the painting is big enough, you will lost in the picture.
Childe Hassam use slenderer strokes, it is kind of "drizzling" of strokes. His favorite color seems light blue, it makes his paintings looks very lovely and sweet.