SON OF “BIG TRAIN” ON MOUND—»Waltar Johnson, Jr.,son of the “Big Train,” appears In Washington on the mound for th« Bethesda Juniors in the Capi-tal City leagtxe for the first time since he was injured when struck by an automobile several months ago. His father has been sac* cessfulty piloting the Washington ieanx into top position.» Kfmjm