It is expected to run about 10* above last year for the rest of 1957 and then to fall sharply enough to bring the average down to 6*. ... the group of replacement parts for ITS 170 in the form of truck, motors, trolley base, pole, retriever, doors and air-brake equipment. ... The PUC on August lb rejected Chalka#39;s plea to air condition nine streetcars of his DC Transit System fleet. ... Chalk decided on the experiment after the aquot;overwhelming responseaquot; by the public to the Silver Sightseer, the onlyanbsp;...