by Homer A. Watt,...[et al.] by G. L. Bach,...[et al.] by Noel W. Schutz,...[et al.] by Lola Brown,...[et al.] by Tom Downs...[et al.] by Arthur C. Clarke,...[et al.] by Adrian L. Hull,...[et al.] by Alex Leviton...[et al.] by Beryl Packer...[et al.] by Cecil Beaton...[et al.]