The Babylon Project Earthforce Sourcebook (Supplement) by Joseph Cochran, Charles Ryan, and Zeke Sparks; Paperback; 1998; Chameleon Eclectic Entertainment, Inc.; ISBN: 1887990062

The Babylon Project Gamemaster's Resource Kit (Supplement) by J. Michael Straczynski and Joseph Cochran; Paperback; 1998; Chameleon Eclectic Entertainment, Inc.; ISBN: 1887990070

A Dream Given Form (Supplement) by Richard Dakan, Joseph Cochran (Editor), and Chris Impiak (Illustrator); Paperback; 1999; Chameleon Eclectic Entertainment, Inc.; ISBN: 1887990186

Earth Colonies Source Sourcebook (Supplement) by Joseph Cochran, Charles Ryan (Editor), and Jeff Tidball; Paperback - 128 pages; 1998; Chameleon Eclectic Entertainment, Inc.; ISBN: 1887990089

The League (Supplement) by Richard Dakan, Ron Jarrell (Editor), and Joseph Cochran (Editor); Paperback; 1998; Chameleon Eclectic Entertainment, Inc.; ISBN: 1887990178