(Part of The Charlie Numbers Adventures)

Ben Mezrich and Tonya Mezrich

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(Book #6 of An Ada Lace Adventure)

Emily Calandrelli

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(Book #2 of Gamer Girls)

Andrea Towers

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(Book #1 of Gamer Girls)

Andrea Towers

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Sonja Thomas

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(Part of Franny K. Stein, Mad Scientist)

Jim Benton

$91.99

(Book #10 of Franny K. Stein, Mad Scientist)

Jim Benton

$10.99

Betsy Uhrig

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(Book #8 of Tom Swift Inventors' Academy)

Victor Appleton

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(Book #4 of Fort Builders Inc.)

Dee Romito

$7.99

(Part of Chico Bon Bon: Monkey with a Tool Belt)

$8.99

(Part of Chico Bon Bon: Monkey with a Tool Belt)

$6.99

(Book #9 of Franny K. Stein, Mad Scientist)

Jim Benton

$8.99

(Book #7 of Tom Swift Inventors' Academy)

Victor Appleton

$8.99

(Book #3 of Fort Builders Inc.)

Dee Romito

$7.99

(Part of The Mousetronaut Series)

Mark Kelly

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Robert C. O'Brien

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(Part of Nature Cat)

Spiffy Entertainment

$7.99

(Book #6 of Tom Swift Inventors' Academy)

Victor Appleton

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(Part of Peanuts)

Charles M. Schulz

$6.99