Katy, the crawler tractor, was big and strong. She belonged to the Highway Department of the City of Geoppolis. In the summertime, she wore a bulldozer and pushed dirt to make and repair roads. In the wintertime, she wore a snow plow and kept the roads clear. Once she pulled a steamroller out of a pond, and the Highway Department was very proud and fond of Katy, because nothing had ever stopper her. But Katy was so big and strong she wished it would really snow hard. What Katy did when a big blizzard piled the drifts up to the second story windows and the Police Department couldn't guard the city, the mail couldn't go through, the telephone wires were down, the water mains broke, the Fire Department was snowed in, the doctor couldn't get to the hospital, and the airport was blocked, made the Highway Department prouder and fonder of her than ever.

From the dust jacket