Image Resources
There are many searchable public domain image resources available online. These images are generally available for educational or informational purposes. If you are not sure whether youcan use a photo for your purposes, please check the usage guidelines.
Federal Emergency Management Agency (FEMA)
National Aeronautics and Space Administration (NASA)
Multimedia Image Gallery (usage)
Visible Earth (usage)
Earth as Art Images (usage)
National Oceanographic and Atmospheric Administration (NOAA)
NOAA Photo Library (usage)
NOAA Ocean Explorer Gallery
National Park Service (NPS)
Digital Image Archives (usage)
US Antarctic Program
US Department of Agriculture
Electron Microscopy Unit Snow Page
National Resources Conservation Service Photo Library (usage)
On-line Photography Center