USDA Farmer's Bulletin
This old information is all about using larger teams and saving on the human labor factor. These ideas kept on growing and by the 1940’s Wayne Dinsmore and the original Horse and Mule Association of America produced detailed pamphlets and lots of propaganda trying to sell the idea of big hitches of from 6 to 30 head for large scale field work. The basic premise of larger units to save labor jumped the creek after WWII and was used to justify getting rid of those same draft animals and replacing them with tractors.
U.S. Department of Agriculture Farmer’s Bulletin No. 1184 Issued 1921, Revised 1941 — The evident preference of the Chinese for the wild root and the unsatisfactory state of the general market for cultivated ginseng have caused grave doubts as to the future prospects of the industry. These doubts will probably be realized unless growers should strive for quality of product and not for quantity of production, as has been the all too common practice in the past.
Grasshoppers, both young and old, injure crops in but one way, that is, by gnawing and devouring them wholesale, and where very numerous they have been known to consume almost every green thing in sight. Even the bark on the tender twigs of trees is eaten by these ravenous insects, which are known to gnaw the handles of agricultural tools, such as hoes and rakes, in order to secure the salt left upon them by the perspiring hands of the farmer.