In his lecture, “The Rau Model Plow Collection at Cornell and The Evolution of Plow Designs, ” Cornell professor emeritus Gerald Rehkugler tells the story of Cornell's Rau Model Plow Collection and illustrates the evolution of the plow over time in his April 21, 2011 presentation to the Cornell Association of Professors Emeriti (CAPE). The Rau Collection was acquired in 1868 by the first Cornell president Andrew Dickson White. The models trace the development of the plow from around 3000 B.C.E. to the mid 1860's. Supplemental resources include a written version of Rehkugler’s lecture, an English translation of the Directory of the models by Prof. Dr. Ludwig Rau, an 1868 letter from president White to Cornell University founder Ezra Cornell about the acquisition of the collection of model plows, an interview with Howard Riley by university archivist Gould Colman that includes a discussion of these models, brief descriptions of a plow that Ezra Cornell marketed and the plow intended to lay telegraph lines that he invented and patented. A selected list of Rehkugler’s own publications completes the supplemental materials. QuickTime videos of the lecture and supplementary materials use H.264 compression. One set is for Apple TV and the other is formatted for the iPhone (and QuickTime Player). These include the lecture, plowing using oxen, a brochure describing an event about plows and plowing sponsored by the Interlaken Historical Society and a brief description of minimum tillage cropping. Streaming videos of the main lecture component are also available online in YouTube at http://www.youtube.com/watch?v=XGznAv9S94Q&feature=youtu.be and in CornellCast at http://www.cornell.edu/video/?videoid=1248