Farmers' bulletin (United States. Dept. of Agriculture); no. 731

"This publication is designed to convey to the farmer, in a brief and simple manner, the natural history of the true army worm, a caterpillar which from time to time becomes enormously destructive to growing cereals, and sometimes to forage crops; to give him a summary of the information necessary for its control; and especially to urge upon him the necessity for constant vigilance in the combat with this insect." -- title pag