As Rachmaninoff and Horowitz knew each other personally I would have expected there to be at least one famous recording of the Second Piano Concerto by Horowitz, however I cannot find one.
So I am wondering whether such a recording exists (if so where can I listen to it?) and if not, was there a reason given by Horowitz for not recording this, given the Third Piano Concerto is widely regarded as more difficult than the Second.