This Power Point presentation contains an overview of more detailed documentation of research published in "Highlights in Dairy Cattle Reproduction in the Last 100 Years" published by the author on June 1, 2005. It includes highlights on research with dairy bulls and dairy cows that led to the widespread use of artificial insemination and great improvement in the genetics of dairy cattle. Venereal diseases, such as Vibriosis also were controlled. This presentation contains many photographs of pioneer researchers and associated research plus a challenge for future researchers in this field.