wr.usgs.gov/USGSFlag/Data/maps/ archive copy at the Wayback Machine English Digital topographic elevationsmap of California, US applies to jurisdiction:
image is a derivative work of the following images: File:Digital-elevation-map-california.png licensed with PD-USGov-USGS 2015-01-04T11:02:29Z GifTagger
standard: work of the federal government of the United States described at URL: https://commons.wikimedia.org/wiki/File:Digital-elevation-map-california.png
Original map: Captions: Conversion to gif: This image is a derivative work of the following images: File:California Mountain Ranges.png licensed with PD-USGov-USGS