Itâ€™s a red, white, and blue mystery from popular A to Z Mysteries author Ron Roy!Â Who Broke Lincoln's Thumb?Â Â In the fifthÂ book of the Capital Mysteriesâ€”an early chapter book mystery series featuring fun facts and famous sites from Washington, D.C.â€”it's party time in Washington, D.C.! The president is planning a celebration at the Lincoln Memorial in honor of the man who sculpted the famous statue of Abraham Lincoln. But KC and Marshall notice one small problem - one of the thumbsÂ has broken off the statue! Has someone stolen Lincoln's thumb? Can KC and Marshall find it before the celebration?Â Each book highlights one of the famous museums, buildings, or monuments from the Washington area and includes a map and a two-page fun fact spread with photographs. Parents, teachers, and librarians agree that these highly collectible chapter books are perfect for emerging readers and any kid who love mysteries!