David and his family travel back in time to San Antonio, Texas in 1836 and meet such brave defenders of the Alamo as Davy Crockett.
David and his family travel back in time to California in 1849 to experience the ups and downs of prospecting for gold.
David and his family meet William Henry Lewis, an African American football hero who travels to the future with them when he's injured.
David and his family travel back in time to 1880 to experience life in the American South as the Reconstruction era following the Civil War came to an end.
David and his family use his grandfather's time travel machine to go back in time to the Chicago World's Fair in 1893.
David and his family use his grandfather's time travel machine to travel to 1853 Ohio, where they assist runaway slaves on their journey north on the Underground Railroad.
David travels back in time to 1906 San Francisco to try to save the lives of Antonio Giovanni and his family who were victims of the devastating earthquake.