Sprockets: A Little Robot (Sprockets, book 1) by Alexander Key

Sprockets (1963)
A Little Robot
(The first book in the Sprockets series)
A novel by Alexander Key

Dr. Bailey, his son Jim, Rivets and Sprockets have an adventure involving space marbles and Martians.

Used availability for Alexander Key's Sprockets

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Hardback Editions

1969 : Hardback

Title: Sprockets: A Little Robot
Author(s): Alexander Key
Publisher: Houghton Mifflin
Availability: Amazon
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January 1963 : Hardback

Title: Sprockets A Little Robot
Author(s): Alexander Key
Publisher: Westminister Press
Availability: Amazon
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