Bestselling 39 Clues author David Baldacci takes students on a webcast field trip to meet renowned museum curators, go behind the scenes, and investigate some of the most fascinating mysteries of American history. Baldacci is the author of Day of Doom, the last book in The 39 Clues series, Cahills vs. Vespers.

Artifacts featured in the program include Lewis & Clark's compass, the Star-Spangled Banner, signed pottery made by a slave, and Abraham Lincoln's watch. Under related links on the resource page, see accompanying pre- and post-webcast materials available for download, as well as a program transcript.