Katy, a brave and untiring tractor, who pushes a bulldozer in the summer and a snowplow in the winter, makes it possible for the townspeople to do their jobs.

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The little house
Maybelle the cable car
Mike mulligan and his steam shovel
Calico - THE WONOER HORSE OR THE SAGA OF STEWY STI NKER \ BY VIRGINIA LEE BURTON
Katy and the big snow