Over the years, I have collected a large amount of sheetmusic over the internet, and the most popular and often requested has been the transcriptions of Vladimir Horowitz. I am providing a host for these scores, as well as the rest that I have acquired on this site. My online archive is here. I am providing these scores completely free of charge, but I encourage anyone to donate to continue to support this excellent host.
Update:
A L. Edson Jeffery has sent me a revised transcription of the 1968 Carmen Variations which he believes is more accurate.
The score can be found below with the list of Horowitz transcriptions.