The US Capital Commotion (Flat Stanley's Worldwide Adventures #9) by Jeff Brown

Ages 7-10

Stanley on Parade!

Stanley’s been chosen to receive a medal of honor in the nation’s capital! But once in Washington, DC, Stanley gets swept away by a crowd and separated from his family. Now he’s on the run in a city filled with monuments—and with shadowy figures on his trail. What’s a flat boy to do now?