I took a look at Hal Leonard's site. It's not listed there, so it's either discontined/out of print, or was never released for Tenor. There is a clarinet version, but I guess you'll run into range issues...
Hi Jack, thanks for the comment, you will see from previous post I have already managed to obtain a used copy (for trumpet). I actually use and can recommend Harmony Assistant for writing and transposing scores on my Mac. I find it to be very very easy to use, although I am considering getting Sibelius at some time.