While prowling around Sam's Club, I found a sampler of 15 episodes of the 1959 series "Riverboat". Darren McGavin and Burt Reynolds are the nominal stars, but the theme and incidental music were composed by Bernstein. This is the year before he wrote "The Magnificent Seven" and two years before "The Comancheros" and it appears he used that BIG WESTERN style of music here for the first time.
I haven't watched all of the episodes yet, but the music has been something else to hear. If there are any other die hard Elmer fans, this is worth picking up.
We deal in lead, friend.