Folkways Records

Wallace House, The University Players

Dr. H.E. Ulrich, George E. Caraker

Dr. Mario A. Pei

Burton Raffel, Robert P. Creed

Lucie De Vienne Blanc, Henri Barras

Paul Mankin

Armand Bégué, Louise Bégué, Pierre Capritz

Cast of the Isaiah Sheffer production, Cast of the Isaiah Scheffer production (leadvocalist), Arnold Black, Ruth Black, Eric Bentley (leadvocalist), Jerome Clegg

Alan Shepard, Cape Canaveral mission control, John Powers, A narrator, NASA researcher, Robert Voas, Virgil Grissom, Joseph Lubin, Stanley White, F.V.H. Hillas, Mort Slur, Donald Slayton, Harrison Brown, T. Keith Glennin

Children of Cuenca, Ecuador, Cuenca Children (leadvocalist), Children of Uruapan, Mexico, Uruapan Children (leadvocalist), Children of Loiza Aldea, Puerto Rico, Loiza Aldea Children (leadvocalist)