While searching Altavista the other day, I came across a web site:
http://www.interClassics.com. I not only found the individual titles
"Carnegie Hall Konzerte 1965-1966" and "Fernsehkonzert 1968" (Television
Concert) but I also found "The Art of the Piano" on video which I missed
when it was televised along with a couple of other Horowitz videos. By the
way, the jazz site is pretty impressive too.
Tonio Rolle