Mark Twain Library in Redding is seeking volunteers for its annual Frog Frolic on April 29, one of the library’s biggest events. The event, in its 22nd year, is described as a children’s country fair and will feature touch a truck, a children’s book sale, inflatables, entertainment, a silent auction, cake walk and a toddler bubble garden. Tickets cost 50 cents to play games, make crafts and bounce in the inflatables.