Weed Images and Descriptions - Rutgers University. This award winning site consists of an extensive alphabetical list of weeds with related graphical images.

Iowa State University Insect Image Links - an extensive listing web sites with insect images.

IMAGES: Insects and their Relatives at the University of Nebraska - Lincoln. Images of insects of agricultural significance categorized by plants they affect.

ARS Image Gallery and USDA Online Photography Library. Complimentary sources of high quality digital photographs available from the USDA. Includes various crops and pest photos.

Index of Fruit Insect Pest Photographs at West Virginia University
A gallery of color images depicts insects known to have harmful effects on fruit crops (apple, pear, peach/nectarine, cherry). Images show the adult and larval insect, as well as the damage or injury they cause in the fruit. Both direct and indirect pests are included. A section is also devoted to images of natural enemies of the pests.

Insect drawings at the University of Illinios. Black and white as well as colored images originally drawn as part of a WPA project during the 1930's.

Integrated Pest Management Image Library at Ohio State University. Photos of field crop pest insects and their damage.