National Irrigation Congress

The National Irrigation Congress was held periodically in the Western United States beginning in 1891 and ending in 1916, by which time the organization had changed its name to International Irrigation Congress. It was a "powerful pressure group." == Nineteenth century == 1891 The first congress was organized in Salt Lake City by William Ellsworth Smythe, the editor of the publication Irrigation Age, Elwood Mead, a Wyoming irrigation engineer, and Senator Francis E. Warren of Wyoming.

Source: Wikipedia — National Irrigation Congress (CC BY-SA 4.0)