WBW Theater is a home for golden-age radio, and it makes no secret of it. Each episode in the recent run begins with the same spoken welcome. That welcome recalls the days when families gathered around the living-room radio and invites the listener into the theater of the mind, listing dramas, comedies, mysteries, thrillers and westerns as the fare. Then the vintage broadcast plays. At the end comes an equally fixed sign-off that promises thrills and adventure, rip-roaring comedy, shoot-'em-up westerns and gangbusters. The frame stays fixed while the contents vary widely. Pulp heroics are one strand. The Blue Beetle follows Dan Garrett, a rookie patrolman who fights the underworld in chain armor. In the stretch heard here he traces a bullet to a French machine gun, confronts a collector named Philip Radin, and signals his arrival with the sound of his magic ray machine. The broadcast even ends by crediting the character as a Fox feature from Mystery Men Comics magazine. Science fiction is another strand. Dimension X contributes 'Mars is Heaven', in which a ship's crew keeps looking for a logical explanation after landing on Mars, until Lieutenant Lustig runs off down the street and finds himself greeting his grandparents. Children's radio gets its turn too. Big Jon and Sparkie calls out to the boys and girls with a chapter titled 'Over The Falls In An Airplane'. In it the characters swap stories about glider records while their aircraft loses altitude, and the episode ends with talk of a secret meeting of the Order of the Glorious Knights of the Mystic Secret Circle. Comedy comes through the Martin & Lewis Show, heard in an audition with Bob Hope as guest. Dean Martin and Jerry Lewis bicker over which half of the team matters, with a nod to Fibber and Molly along the way. Breakfast With Dick and Dorothy offers a quieter pleasure. In one episode Leo Durocher recalls turning back to argue with gendarmes carrying bayonets in Cuba. In another, Florence Pritchett fills in while the regular pair vacation in Bermuda, and the pitches run to Dreft suds and a Hanscom's coffee cake swimming in honey. Those commercials are worth hearing in their own right, because they carry the rhythms and assumptions of their time as clearly as any script. For a first listen, 'Mars is Heaven' shows the dramatic side, and a breakfast episode shows what an ordinary morning on the radio once sounded like.