If you don't get a reply from an individual you might consider
contacting Pine Creek Pack Station/Sequoia Kings Pack Trains.
They drop off food re-supplies over Kearsarge Pass to Charlotte Lake area or by arrangement to the John Muir Trail/ Kearsarge Pass trail junctions. Call Dee or Brian at 1 800 962 0775. I don't know the current price for a small 7-10 # package. I have
used them and know several others who have used them and been satisfied with their service.