David W. Mayer is a longtime member of the Oil Painters of America (OPA), as well as a full "Artist Member" of the California Art Club (CAC) founded in 1909. He is also a past member of the Rocky Mountain Plein Air Painters (RMPAP). He is an avid impressionist and plein air landscape painter with an emphasis on portraying the beauty of the Rocky Mountain West as well as the Southwest, California and the West Coast.