Doubleday balloon books

Miscellaneous facts and statisticss about animals, e.g.: "A hippopotamus can run faster than a man.".

Captain Swifty and his animal friends count to fifty.

Georgie, a kind and helpful ghost, relocates a family of robins when the wind destroys its nest.

The Know-It-Alls, a family of madcap alligators, demonstrate the form and function of various types of trucks.