University of Rhode Island Tick Research Laboratory
- Research and information on ticks and tick-borne diseases. Includes sketches, photos, size comparison, and morphological descriptions of ticks found in Rhode Island.
- http://www.tickencounter.org/

Iowa Insect Notes: American Dog Tick
- About Dermacentor variabilis and its control, with photographs illustrating the life stages of this and other ticks found in the region, including deer tick (Ixodes scapularis) and lone star tick (Amblyomma americanum).
- http://www.ipm.iastate.edu/ipm/iiin/tamerican.html

Lyme Disease and Tick Management
- University of Nebraska Cooperative Extension factsheet and audio on ticks and Lyme disease, including images of several tick species and life stages.
- http://lancaster.unl.edu/enviro/pest/factsheets/001-95.htm

Information on Ticks
- Articles on the identification and removal of ticks.
- http://www.surviveoutdoors.com/reference/ticks.asp

Common Tick Species In New Jersey
- Descriptions and images of dog (Dermacentor variabilis), deer (Ixodes scapularis), and lone star (Amblyomma americanum) ticks.
- http://www.visitmonmouth.com/mosquito/ticks.html

Tick Research Laboratory at Texas A&M University
- Detailed information about ticks and tick research in Texas.
- http://ticsys.tamu.edu/

Medline Plus: Tick Bites
- Information about ticks and tick-borne diseases.
- http://www.nlm.nih.gov/medlineplus/tickbites.html

Tick Biology
- Information and images covering the life cycles and biology of the Ixodidae (hard ticks) and Argasidae (soft ticks).
- http://entomology.ucdavis.edu/faculty/rbkimsey/tickbio.html

Iowa State Entomology - Ticks
- Photographs and QuickTime movies of several tick species of North America.
- http://www.ent.iastate.edu/imagegal/ticks/