Frank Carlson Library

After unscrupulous collector S. Wendell Palamino cons him out of a valuable baseball card, sixth-grader Griffin Bing puts together a band of misfits to break into Palomino's heavily guarded store and steal the card back, planning to use the money to finance his father's failing invention, the Smart Pick fruit picker.

When Joe travels back in time to 1944, he meets the Milwaukee Chicks, one of the only all-female professional baseball teams in the history of the game.

With his ability to travel through time using baseball cards and photographs, thirteen-year-old Joe and his mother go back to 1863 to ask Abner Doubleday whether he invented baseball, but instead find themselves in the middle of the Battle of Gettysburg.

With his ability to travel through time by using baseball cards, Joe goes back to 1947 to meet Jackie Robinson, turning into a black boy in the process.

Roger's friend Kenneth uses an unusual sea vehicle of his own design to take them to an underwater cave, where a cache of old loot gathered by the mermaids turns out to contain a lot of very valuable old baseball cards.

Joey, who loves baseball but is not very good at it, finds a valuable 1909 Honus Wagner card and travels back in time to meet Honus.