Northern Cricket Frog (Acris crepitans) - Includes photos, range map, and information on subspecies. - http://www.npwrc.usgs.gov/resource/herps/amphibid/species/crepitan.htm
Northern Cricket Frog (Acris crepitans) - Provides species account including photos and taxonomy. - http://animaldiversity.ummz.umich.edu/site/accounts/information/Acris_crepitans.html