Metro Detroit-based businessman, author and songwriter Andy Gutman will appear at Paper Trail Books in downtown Royal Oak on Saturday, April 7 from 1-2 p.m. His appearance will include readings of his two children’s books, Charlie the Caterpillar and Pop Lullaby, as well as entertainment by a local musician, who will perform the companion songs from both of Gutman’s books. Gutman also will sign copies of his books for attendees.