The collection contains eight publications published by Universidad Nacional de Colombia concerning poultry, pigs, cattle, and alfalfa written by Weaver and are in Spanish. There are also reports (dated 1955-1959) by Earl Weaver to John Stone concerning MSU's mission to Colombia. In addition, there is also a report by the Michigan Holstein Breeders Association called "Holstein Cattle Owned in Michigan in 1883," as well as a booklet "Two Hundred and Fifty Years of Michigan Dairying."