References for Homepage Graphic
1) Sentinel-2 artist rendition (cropped somewhat for graphic here); cited at: http://www.esa.int/spaceinimages/Images/2014/07/Sentinel-2_brings_land_into_focus
2) Sentinel-2 snow map of part of Mammoth Mountain, CA, USA developed by GIS Ag Maps.
3) Landsat-based management zone graphic developed by GIS Ag Maps.
4) Landsat 5 fire map in San Gabriel Mountains, CA, USA developed by GIS Ag Maps.
5) Landsat 8 artist rendition (cropped somewhat for graphic here) from National Aeronautics and Space Administration (NASA); cited at: https://landsat.gsfc.nasa.gov/landsat-update-upcoming-landsat-8-reprocessing/