Shel Silverstein was one of the most talented poets of the last century. If you were a kid who grew up in America, you grew up with his songs, poems, and maybe one or two cartoons that he made, too.

Shel Silverstein was best known for children’s classics like “The Giving Tree” and his books of poetry, including “Where the Sidewalk Ends,” “Falling Up” and “A Light in the Attic.” Though most of his ...