Scope and Contents The collection consists of the publication Horses Mules Power Profit produced by the Horse Association of America (later known as the Horse and Mule Association of America). The publication is listed as leaflet 190 and was produced in 1928. In the acknowledgements, R. S. Young of Michigan is thanked. The reference is most likely to Ralph S. Young, a 1907 graduate of Michigan State University (MSU) who went on to work at MSU in animal husbandry.The...