2013-05-132013-05-131915http://hdl.handle.net/10605/17204Early irrigation pumping unit. Greens design, first right angle gear head.The images in this collection are for study purposes, teaching, classroom projection and research only. To use these digital files in any form, an attribution of "Courtesy of the Southwest Collection/Special Collections Library" must accompany the image.Agriculture-Irrigation Farmsimage