Frank Sherwin was a British artist active in the early to mid 20th century. He is best known for his delightful travel posters, as well as his traditional watercolors.
He also painted watercolors for a number of “carriage prints” (images above, bottom, with details). These were horizontal format banners displayed in railway cars for the entertainment of passengers, much the way ads are often displayed in a row above the windows in subway trains and busses here in the U.S.
