FTP, name this rival of Frederic Church, a German-born member of the Hudson River School.
Although he taught monochromatic painting in Massachusetts by 1850, his skill increased dramatically while studying later at the D?sseldorf Art Academy.  His career really took off following an 1859 trip under Colonel Frederick Lander to Colorado and Wyoming, followed by two more journeys to the American West, where he painted such works as Sunset in the Yosemite Valley and Seal Rock.  FTP, name this rival of Frederic Church, a German-born member of the Hudson River School.
Although he taught monochromatic painting in Massachusetts by 1850, his skill increased dramatically while studying later at the D?sseldorf Art Academy.  
Albert Bierstadt