Hey Jim,
In 2013 (July) a young man by the name of Matthew Greene, was last spoken to on July 17th. He was in Mammoth waiting for his car to be repaired, and while waiting was hiking in the area. It is believed that he would be hiking in the Banner/Ritter area on his last day but his exact destination is not really known. More information can be found at:
https://www.facebook.com/notes/find-matthew-greene/details-of-matts-disappearance/523033734436824Poster used in the search:

I think it is believed that he was wearing the blue hat shown in the poster.
While not likely you will happen upon him with the snow cover, it could happen. I know his family would like to get closure.
Also, I'm planning on a day hike up to 1000 island Lake on the 17th, and would love to know more about the tail conditions in the area. So, a trip report would be appreciated.
Thanks
John