Photographs
The National Renewable Energy Laboratory (NREL) maintains a searchable online library of photographs called Photographic Information Exchange (PIX).
A selection of biomass PIX photos can be found on the NREL site by doing a text search or visual search for "biomass."
The USDA Natural Resources Conservation Service Photo Gallery is an excellent source for agricultural and forestry biomass resource photographs. Additionally, a selection of good photos of potential dedicated bioenergy crops, such as switchgrass and poplars, can be found at Oak Ridge National Laboratory's Bioenergy Feedstock Development Program.