Book 1

Secret of the Knights

by Jim Gasperini
Jan 1, 1984
English
Paperback

Book 2

Search for Dinosaurs

by David Bischoff
Feb 1, 1984
English
Paperback

Search for Dinosaurs

by David Bischoff, Doug Henderson, Alex Niño
Jun 16, 2013
English
Kindle

La máquina del tiempo: En busca de los Dinosaurios

by David Bischoff, Doug Henderson, Alex Niño
Jan 16, 1987
Spanish
Paperback

Book 3

Sword of the Samurai

by Steve Reaves Michael;Perry, Steve Perry
Jan 1, 1984
English
Paperback

Book 4

La Ruta de los Piratas

by Jim Gasperini, John Pierard, Alex Niño
Jan 1, 1984
Spanish
Paperback

Sail With Pirates

by Jim Gasperini, John Pierard, Alex Niño
Aug 1, 1984
English
Paperback

Book 5

Time Machine 5: Civil War Secret Agent

by Steve Perry, Alex Niño
Aug 26, 2013
English
Kindle

Book 6

The Rings of Saturn

by Arthur Byron Cover
Feb 1, 1985
English
Paperback

Book 7

Ice Age Explorer

by Dougal Dixon, Doug Henderson, Alex Niño
May 1, 1985
English
Paperback

Book 8

The Mystery of Atlantis

by Jim Gasperini, Kenneth Smith
Jul 1, 1985
English
Paperback

Book 9

Wild West Rider

by Stephen Overholser, Steve Leialoha
Sep 1, 1985
English
Paperback

Book 10

American Revolutionary

by Arthur Byron Cover, Walter Martishius, Alex Niño
English
Kindle

Book 11

Time Machine 11: Mission to World War II

by Susan Nanus, Marc Kornblatt, John Pierard
Sep 11, 2013
English
Kindle

Book 12

Le sorgenti del Nilo

by Robert W. Walker, José Gonzalez Navaroo
May 31, 1987
Italian
Paperback

Search for the Nile

by Robert W. Walker, José Gonzalez Navaroo
Apr 1, 1986
English
Paperback

Book 13

Secret of the Royal Treasure

by Carol Gaskin, Ernie Colón
Jan 1, 1986
English
Paperback
Sep 17, 2013
English
Kindle

Book 14

Blade of the Guillotine

by Arthur Byron Cover
Sep 1, 1986
English
Paperback

Book 15

Flame of the Inquisition

by Marc Kornblatt
Nov 1, 1986
English
Paperback

Time Machine 15: Flame of the Inquisition

by Marc Kornblatt, John Pierard
Sep 17, 2013
English
Kindle

Book 16

Quest for the Cities of Gold

by Richard Glatzer, José Gonzalez Navaroo
Jan 1, 1987
English
Paperback

Time Machine 16: Quest for the Cities of Gold

by Richard Glatzer, José Gonzalez Navaroo
Sep 20, 2013
English
Kindle

Book 17

Mar 1, 1987
English
Paperback

Book 18

Sword of Caesar

by Robin Stevenson, Bruce Stevenson
May 1, 1987
English
Paperback

La espada de César

by Robin Stevenson, Bruce Stevenson
Jan 1, 1987
Spanish
Paperback

Book 19

Death Mask of Pancho Villa

by Carol Gaskin, George Guthridge, Kenneth Huey
Aug 1, 1987
English
Paperback

Book 20

Bound for Australia

by Nancy J. Bailey, Julek Heller
Sep 1, 1987
English
Paperback

Book 21

Caravan to China

by Carol Gaskin, José Gonzalez Navaroo
Nov 1, 1987
English
Hardcover

Book 22

Last of the Dinosaurs

by Peter Lerangis
Jan 1, 1988
English
Paperback

Book 23

Aug 1, 2001
English
Paperback

Book 24

Time Machine 24: World War I Flying Ace

by Richard Mueller, George Pratt
May 1, 2017
English
Paperback
Edition: 2nd ed.

Book 25

World War II Code Breaker

by Peter Lerangis
Aug 1, 1989
English
Paperback