General Motors Sales Corporation. In matter of General Motors Sales Corporation, Frigidaire Division, and Enterprise Association of Steam, Hot Water, Hydraulic, Piping, Sprinkler, Pneumatic Tube, Ice Machine, Air Conditioning, and General Pipefitters of New York and Vicinity, Local No. 638, United Association of Journeymen, Plumbers and Steamfitters of United States and Canada, affiliated with American Federation of Labor, Branch C, case no. R-1745, decided Apr. 17, 1940; decision and direction of election.