pen, watercolour, acetone transfer
CDC? is a wonderful picturebook by the late William Steig. Sentences are made using letters and numbers to sound-out words. For example: U F D-K N U-R K-9 = "You have decay in your canine."
Above illustration of a house by the sea was inspired by the house below, apparently used in a movie set and now a vacation rental, in Rodanthe, NC.