I like to write the dates on the back of my sketchbooks, as pictured above. I have a series of ~2-5 sketchbooks a year, going back to 1994 on a shelf in my studio. It’s helpful to go back and look at old ideas sometimes. And it’s the closest thing I have to a journal.
See full post here: Plentiful as Blackberries: Steve Morrison Illustration2012-04-30.