Englehart is noted for his documentation of America's Northwest Frontier at the turn of the 20th century, and for his oil paintings of landmarks such as Yosemite Valley, Mount Hood and Crater Lake.  With most of his paintings he consistently avoided effets de soir, choosing the midday light over the romantic quality of lighting effects of sunrise or sunset.

His work is in the collection of the College of Notre Dame, Washington State Historical Society, De Young Museum, Nevada Museum, Society of California Pioneers and the Oakland Museum. He exhibited at the Lewis and Clark Expo (Portland), 1905. 

In 1902, when it appeared that many California collectors preferred European art work to local painters, Englehart decided to change residences and opened a studio in Portland, Oregon.  However, he only stayed in that area until 1904, and then via New York City, he returned to California where he settled for the remainder of his life in the Alameda, Oakland area.