 Rod SerlingNarrator (archive sound) | Narrator (archive sound) |
 Gig YoungMartin Sloan (archive footage) | Martin Sloan (archive footage) |
 Frank OvertonRobert Sloan (archive footage) | Robert Sloan (archive footage) |
 Burgess MeredithHenry Bemis (archive footage) | Henry Bemis (archive footage) |
 Vaughn TaylorMr. Carsville (archive footage) | Mr. Carsville (archive footage) |
 Jacqueline deWitHelen Bemis (archive footage) | Helen Bemis (archive footage) |
 Maxine StuartBandaged Janet Tyler (archive footage) | Bandaged Janet Tyler (archive footage) |
 Agnes MooreheadWoman (archive footage) | Woman (archive footage) |
 Lloyd BochnerMichael Chambers (archive footage) | Michael Chambers (archive footage) |
 Susan CummingsPatty (archive footage) | Patty (archive footage) |
 Richard KielKanamit (archive footage) | Kanamit (archive footage) |
 Claude AkinsSteve Brand (archive footage) | Steve Brand (archive footage) |
 Barry AtwaterLes Goodman (archive footage) | Les Goodman (archive footage) |
 Jack WestonCharlie Farnsworth (archive footage) | Charlie Farnsworth (archive footage) |
 Irene TedrowMrs. Sloan (archive footage) | Mrs. Sloan (archive footage) |
 Ron HowardWilcox Boy (archive footage) | Wilcox Boy (archive footage) |
 Byron FoulgerCharlie (archive footage) | Charlie (archive footage) |
 Lela BlissMrs. Chester (archive footage) | Mrs. Chester (archive footage) |
| WWilliam D. GordonDoctor (archive footage) | Doctor (archive footage) |
| JJennifer HowardJanet's Nurse (archive footage) | Janet's Nurse (archive footage) |
 George KeymasLeader (archive footage) | Leader (archive footage) |
| DDouglas HeyesAstronaut (archive footage) | Astronaut (archive footage) |
 Theo MarcuseCitizen Gregori (archive footage) | Citizen Gregori (archive footage) |
 Hardie AlbrightSecretary General (archive footage) | Secretary General (archive footage) |
 Jan HandzlikTommy (archive footage) | Tommy (archive footage) |
 Burt MetcalfeDon Martin (archive footage) | Don Martin (archive footage) |
| MMary GregorySally (archive footage) | Sally (archive footage) |
 Bill ErwinWilcox (archive footage) | Wilcox (archive footage) |
 Pat O'MalleyMr. Wilson (archive footage) | Mr. Wilson (archive footage) |
| AAnne BartonMyra Brand (archive footage) | Myra Brand (archive footage) |
