The Left Behinds 1 The iPhone That Saved George Washington by David Potter The iPhone That Saved George Washington by David Potter (Crown Books for Young Readers, January 2015).
The Left Behinds 2 Abe Lincoln and the Selfie That Saved the Union by David Potter Abe Lincoln and the Selfie That Saved the Union by David Potter (Crown Books for Young Readers, January 2016).