(Book #6 of An Ada Lace Adventure)

Emily Calandrelli

$6.99

Sonja Thomas

$16.99

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

Jim Benton

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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

$5.99

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

Jim Benton

$11.99

(Book #7 of Tom Swift Inventors' Academy)

Victor Appleton

$6.99

(Book #3 of Fort Builders Inc.)

Dee Romito

$5.99

(Book #6 of Tom Swift Inventors' Academy)

Victor Appleton

$4.99

(Book #8 of Franny K. Stein, Mad Scientist)

Jim Benton

$11.99

(Book #2 of Fort Builders Inc.)

Dee Romito

$5.99

Ben Miller

$9.99

(Book #5 of Tom Swift Inventors' Academy)

Victor Appleton

$6.99

(Book #5 of Sam the Man)

Frances O'Roark Dowell

$13.99

(Book #1 of Fort Builders Inc.)

Dee Romito

$5.99

(Book #4 of Tom Swift Inventors' Academy)

Victor Appleton

$6.99

(Book #4 of Frankie Sparks, Third-Grade Inventor)

Megan Frazer Blakemore

$5.99

(Book #3 of Frankie Sparks, Third-Grade Inventor)

Megan Frazer Blakemore

$5.99

(Book #3 of Tom Swift Inventors' Academy)

Victor Appleton

$6.99

(Book #3 of MiNRS)

Kevin Sylvester

$11.99