The mathematician Martin Gardner, pictured above in Central Park, would have turned 99 years old today. As the Times points out, his bestselling book was The Annotated Alice.

Gardner’s editor here, Bob Weil, says Gardner ”was something out of the Wizard of Oz. To know Martin — he was something out of a time warp. He lived in his stories. He lived in Lewis Carroll. He was frozen in the land of Oz. Part of him is Dorothy just skipping.”