Norby Through Time and Space — Janet Asimov

NORBY IS AT IT AGAIN!

That lovable mixed-up robot is back--and in more trouble than ever! Along with his sometimes fearless human companion, Jeff Wells, Norby has gotten himself into more trouble than would seem humanly--or robotically--possible.

This time, even Norby himself can't figure out how he and Jeff got into these intergalactic foul-ups. After all, being taken prisoner by a bunch of aliens from a distant universe wasn't Norby or Jeff's idea. And how could our heroes have known that they were really. sticking their necks out when they accidentally travelled back in time...to the French Revolution?