oring ▁Tom orrow ▁was ▁an ▁American ▁old - time ▁radio ▁series ▁which ▁ran ▁on ▁the ▁Mut ual ▁Broadcast ing ▁System ▁from ▁December ▁ 4 , ▁ 1 9 5 7 , ▁until ▁June ▁ 1 3 , ▁ 1 9 5 8 . ▁An ▁advert is ement ▁described ▁it ▁as ▁" the ▁first ▁science - f iction ▁show ▁of ▁science - f ict ione ers , ▁by ▁science - f ict ione ers ▁and ▁for ▁science - f ict ione ers ▁- ▁real ▁science ▁fiction ▁for ▁a ▁change !" ▁ ▁Ex pl oring ▁Tom orrow ▁was ▁narr ated ▁by ▁John ▁W . ▁Campbell , ▁editor ▁of ▁Ast ounding ▁Magazine . ▁Campbell ▁gu ided ▁the ▁career ▁of ▁many ▁of ▁the ▁great ▁science ▁fiction ▁writers ▁of ▁the ▁era . ▁ ▁Person nel ▁ ▁Produ cer - direct or : ▁San ford ▁Marshall . ▁ ▁Ann oun cer : ▁Bill ▁M ahr , ▁Guy ▁Wal lace ▁ ▁Cast : M and el ▁K ram er , ▁Bry na ▁Ra eb urn , ▁Law son ▁Z er be , ▁L on ▁Clark , ▁Mason ▁Adams , ▁Con nie ▁L emb cke , ▁ ▁Larry ▁H aines , ▁Don ▁Douglas , ▁Bret ▁Mor r ison , ▁Charlotte ▁She ff ield ▁ ▁Th eme : ▁As ▁Time ▁Go es ▁By ▁▁ ▁Writ ers : ▁Rand all ▁Gar rett , ▁Gordon ▁R . ▁Dick son , ▁Robert ▁Silver berg , ▁Isaac ▁As im ov , ▁Philip ▁K . ▁Dick , ▁P oul ▁Anderson , ▁John ▁F lem ing , ▁Raymond