As stated on his Web site, http://karlheerdt.com/, Karl Heerdt had been a cabinetmaker and had designed and built homes locally for more than twenty years before devoting more of his time to painting and sculpture. He has concentrated on landscape painting, inspired by old masters as well as the direct experience with distinctive sites. American Falls Study is among many works from his Niagara Falls series.
Heerdt also has produced figurative and still-life works. Follow the link above to see examples. He is represented in Meibohm Fine Arts in East Aurora, Oxford Gallery in Rochester, and Planet Bronze Art Gallery is Bozeman, Montana.