Wagon Train would make a fantastic 4-CD set a la LLL's Wild Wild West set. In addition to all of Moross's fine work on the show -- which I would want to have ALL of (IMDb credits him for five episodes) -- there are of course also works by the other following wonderful film composers (using IMDb as my guide):
Jerry Goldsmith (two episodes: The Ah Chong Story and The Wagon Train Mutiny)
Lalo Schifrin (one episode)
Leigh Harline (one episode)
John Green (one episode)
Gerald Fried (one episode)
Frank Skinner (one episode)
Frank DeVol (one episode)
William Lava (one episode)
Herman Stein (one episode)
David Raksin (one episode)
Daniele Amfitheatrof (one episode)
Jeff Alexander (two episodes)
Alexander Courage (two episodes)
Laurindo Almeida (two episodes)
Hans J. Salter (three episodes)
Nathan Van Cleave (three episodes)
Ernest Gold (four episodes)
Heinz Roemheld (five episodes)
John Williams (six episodes)
Roy Webb (seven episodes)
Lynn Murray (seven episodes)
Morton Stevens (eight episodes)
David Buttolph (nine episodes)
Cyril J. Mockridge (eleven episodes)
Richard Shores (twelve episodes)
There are also other names familiar to me (though sometimes more as orchestrators): Jack Marshall, Arthur Morton, Al Sendry, Al Woodbury, Conrad Salinger, Leo Shuken and Jack Hayes, Nathan Scott, Stanley Wilson, and Sidney Fine (with the record at 25 episode credits)
And some less familiar names (who knows, their music might be wonderful also!): Axel Stordahl, Tak Shinda, and Henri Rene.
On second thought...maybe LLL could consider doing a 6-CD set for this show as they did for Mission: Impossible.
Yavar