The FEMA on line media library contains photos, videos, and audio.
A source for Forest Health, Natural Resources & Silviculture Images.You may search for photos by category, for example "wildfire". A joint project of the University of Georgia and the USDA Forest Service.
This natural resources database includes images.
Thousands of photographs dating to the mid-1800's from the digital collections of the Salem Public Library.
Includes over 1000 field images taken between 1934 and 1945. These span 390 streams in the Columbia River Basin. U.S. Bureau of Fisheries Researches who took these photos looked at spawning and rearing habitat for Spring Chinook Salmon.
From the FWS fire home page, you can link to the fire photos taken on refuges and archived in the FWS image library.
A collection of fire photos on incidents, engines, handcrews, helicopters, airtanker, and equipment. Remember to check with the associated photo permissions page before downloading or using.