1. Black-and-white negative Bookmark Black-and-white negative, museum number 15-3952. Search result 1 Museum number: 15-3952 Culture or time period: Pomo Object class: Black-and-white negatives Maker or artist: Samuel A. Barrett Dimensions: width 5 inches and height 4 inches Collection place: Round Valley, Mendocino County, California Person depicted: Robert Fred Hogan