Norby and Yobo's Great Adventure & Norby and the Oldest Dragon

This eighth volume of the complete children''s sci-fi series features a history-obsessed admiral and trouble at a dragon''s birthday party.Norby and Yobo''s Great AdventureThe illustrious Adm. Boris Yobo wants to travel through time to discover the origins of a treasured family heirloom. And since Norby is the only way to time travel, he and Jeff become Admiral Yobo''s companions on a supposedly i...