Madison, WI; UW-Madison Horticultural Department; Babcock House; Kenneth Buchholtz; LeRoy G. 'Whitey' Holm; tobacco, lettuce, and potato research; travel; National Aeronautics and Space Administration (NASA); North American Aviation (NAA); U.S. Army; Biotron; teaching; graduate students; controlled environments; light emitting diodes (LED); Wisconsin Center for Space Automation and Robotics (WCSAR).