Ken : No I did not mean to say that: quite the opposite. I think you are correct, and hope I didn't add to the confusion. Sorry if I did. I meant to say that It is true that you can only get the Whitney trailhead permit at the VC, but I doubt that particular permit would allow you to enter the trail at Trail Crest coming from Mammoth district.
You of course have to get your Inyo entry permit from the district/trailhead where you enter the back country -- in this case Mammoth -- and THAT permit should cover both Sequoia AND the Trail Crest exit, if the MMWT/Whitney Portal is specified as the exit.
BUT, when entering the first trailhead of the trip in Inyo NF, you are subject to the Trail Crest "exit" quota. I would call Mammoth first to apply to change the exit to MMWWT, and if they confirm that they can do that, forget what I said about confirming with VC. The only reason to call the VC would be to get a WWMT permit and ask if it is good for Trail Crest-to-Portal "exit", which I doubt, but might be worth a try if you can't do the whole deal through Mammoth.
Last edited by saltydog335; 07/03/11 10:13 PM.