The Camas Public Library invites preschoolers and accompanying adults to explore the world of the post office during “Preschool Post Office,”4-5 p.m. April 30. Kids will learn how letters and packages get to the right place as they sort, stamp and deliver pretend mail—building early literacy and social skills along the way. Registration is required at CamasPL.org/PreschoolMail, or by calling the library at 360-834-4692.