The Wonderful Flight to the Mushroom Planet
When Mr. Topman reads an ad in the newspaper, his son David and his
friend Chuck start building a spaceship. Once they have finished they
bring it to Mr. Bass, the man who posted the ad. When it's all fueled up
and ready, they take off for the Mushroom Planet. But with the time
ticking down, will they be able to finish their 16 hour quest? And will
they make it home? If you like science fiction, you'll like this book by
Eleanor Cameron.