These are the three campsites the Donner Party stayed at. The Graves/Reed campsite is next to a stripmall, marked by a cross, the Donner campsite is now, ironically a picnic area, and the Murphy cabin is not far from the museum and momument, near Donner Lake.
Read more about my journey into the past at http://hauntjaunts.net/blog/2010/08/14/donner-pass/
On another note, rumors of buried treasure from the families of the Donner Party still are hidden near Donner Lake.