- Alaska and Yukon
- Birds of Washington
- Camouflaged Creatures
- Cranes
- Earth Science Teaching Resource
- Ferns
- Film & film packaging only...NOT images taken on film
- Fungus amoungus
- Geology Rockers
- Glaciers, Icefields and Icebergs
- Lichen
- Lichens of Canada
- Montañas de los Andes
- Moss and Lichen
- Mosses & Liverworts
- Mountain World
- MOUNTAINEERING -
- Natural PATTERNS, Shapes, and Textures (curated)
- Nature Bookclub
- North Cascades
- Orobanchaceae
- Slime Molds
- Systematic Botany (not for "pretty flower images")
- Washington Landscape
- Washington State Wildflowers