Key to the families of North American insects an introduction to the classification of insects This book, "Key to the families of North American insects an introduction to the classification of insects", by Charles Thomas Brues, is a replication of a book originally published before 1915. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.