I find a lot of inspiration from some of Hopper's work. His watercolors are fresh and loose. He also pays a lot of attention to the warmth of light. Hopper painted watercolors on location. Although with some of his paintings with figures seem wooden-like, the overall feel is very interesting, conveying feelings of stillness, loneliness, isolation and notations of city and vacation life.
This website of Hopper's work and life is really interesting. A scrapbook as stated. Take a look. An Edward Hopper Scrapbook