Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
An Introduction to Entomology
By John Henry Comstock
The Comstock publishing Co., 1933
Cite: 270729 with citation markup [cite:270729]
Several editions, dating back into the 1890's. Apparently (!) in the public domain. Available at the Biodiversity Heritage Library.