Time Machine :: Series

Secret of the Knights (Time Machine #1)
Search for Dinosaurs (Time Machine #2)
Sword of the Samurai (Time Machine #3)
Sail with Pirates (Time Machine #4)
Civil War Secret Agent (Time Machine #5)
The Rings of Saturn (Time Machine #6)
Ice Age Explorer (Time Machine #7)
The Mystery of Atlantis (Time Machine #8)
Wild West Rider (Time Machine #9)
American Revolutionary (Time Machine #10)
Mission to World War II (Time Machine #11)
Search for the Nile (Time Machine #12)
Secret of the Royal Treasure (Time Machine #13)
Blade of the Guillotine (Time Machine #14)
Flame of the Inquisition (Time Machine #15)
Quest for the Cities of Gold (Time Machine #16)
Scotland Yard Detective (Time Machine #17)
Sword of Caesar (Time Machine #18)
Death Mask of Pancho Villa (Time Machine #19)
Bound for Australia (Time Machine #20)
Caravan to China (Time Machine #21)
Last of the Dinosaurs (Time Machine #22)
Quest for King Arthur (Time Machine #23)
World War I Flying Ace (Time Machine #24)
World War II Code Breaker (Time Machine #25)