Rich - Thanks. I was able to date the time I saw the MRS S-2 at StLUS prior to the 1522 trip to Decatur, Illinois. It was October 22, 1988. I recalled I wrote about seeing it in my Frisco Museum "Roster Tails" column and I looked it up - it's in All Aboard Volume 3, Number 10, page 2. Ken ps - The Frisco Alco S-2 "Headless Humpster" article is in Volume 3, Number 1, page 2.