It is a box of Ansel Adams negatives. His Grandson says no, but I truly believe they are. The thing is, I don't think they are worth THAT much. I have looked at them, and they are certainly old large format photos. There is a signed slip by Mrs. Adams identifying the negatives. The thing is Ansel Adams probably put in more hours in the dark room than in the field. His eye is evident in his negatives. His art is in what he did with those negatives in getting the print he wanted.