More stories of the perennial Earthworm Tractor Company, these are largely concerned with the trials and tribulations of Henderson, the sales manager, the frantic calls he receives that start the wheels moving too slowly to keep out of trouble. Here are competitive demonstrations, one with an elephant; tractors stuck in mud, in lakes and swimming pools the country over. An old lady demands a beautiful and expensive car made out of a tractor chassis. The wizard mechanic Joe Mullin seemed slow and stupid but could cope with an emergency. The inimitable Gladwin Piper, bane of Mr. Henderson's existence, kept turning up when least wanted, had a difficulty to block every solution, wrecked innumerable tractors, and did everything wrong but managed to reach a right conclusion. For an established market.