Encyclopedia Brown and the Case of Pablo's Nose by Donald J. Sobol

This book isn't as crazy as it sounds. It's part of the Encyclopedia Brown series, that is mainly about a boy genius. He uses his skills as a detective, and since his father is the chief of police, he can put those skills to good use by catching criminals. He also helps the kids in his town by stopping bullies and recovering things. In this story, he recovers Abraham Lincoln's nose, which was stolen by a purple bicycle. -AbdurRahman