▁of ▁Barbara ▁G aca ▁( age ▁ 7 , ▁body ▁discovered ▁near ▁Pont iac , ▁March ▁ 3 1 ), ▁Je ann ie ▁Sing leton ▁( age ▁ 8 , ▁body ▁found ▁north ▁of ▁Kal am az oo , ▁June ▁ 1 ), ▁and ▁Peter ▁Gor ham ▁( age ▁ 1 2 , ▁body ▁found ▁north ▁of ▁Mus k eg on , ▁August ▁ 1 4 ). ▁( AP - 3 , ▁UP - 2 ) ▁ ▁The ▁announ cement ▁at ▁a ▁press ▁conference ▁in ▁Ann ▁Ar bor ▁on ▁April ▁ 1 2 ▁that ▁the ▁S alk ▁pol io ▁v acc ine ▁had ▁been ▁approved ▁as ▁safe ▁and ▁effective . ▁( AP - 2 , ▁UP - 4 ) ▁ ▁Record ▁production ▁tot als ▁in ▁the ▁autom obile ▁industry . ▁The ▁industry ▁produced ▁a ▁record ▁ 7 , 9 4 2 , 8 9 3 ▁passengers ▁cars ▁in ▁ 1 9 5 5 , ▁an ▁increase ▁of ▁more ▁than ▁a ▁million ▁cars ▁over ▁ 1 9 5 4 ▁production ▁levels . ▁T ruck ▁production ▁was ▁ 1 , 2 4 7 , 7 9 9 . ▁ ▁The ▁break down ▁among ▁manufact ur ers ▁was ▁ 4 , 6 4 9 , 2 7 9 ▁for ▁General ▁Mot ors ▁( 1 , 8 3 0 , 0 3 7 ▁for ▁Che v ro let ), ▁ 2 , 6 1 4 , 5 9 9 ▁for ▁Ford ▁Motor , ▁and ▁ 1 , 4 5 7 , 4 5 3 ▁million ▁for ▁Ch