First edition dated 1917, excellent condition, from the now closed Montreal Fraser Institute Library. Illustrated with 48 beautiful plates, 32 in color. 286 pages. Entitled Butterflies Worth Knowing by Clarence M. Weed. Editor is Doubleday, Page & Co. In New York. Book still has its library card on the last page and the Fraser Institute's tag on the first page. Book measures 5 5/8 X 8 1/4 inches.