Tomie DePaola’s children’s stories have sold more than 25 million copies and been translated into more than 20 languages. We said goodbye to him this week, but his legacy lives on.In a town in Calabria, a long time ago, there lived an old lady named Strega Nona, which meant “grandma witch.” If you were born after 1975 in the United States, you are probably familiar with these words, which come from the children’s book “Strega Nona,” first published that year. It won a Caldecott Honor the very next year, and was named one of the “Top 100 Picture Books” of...