Tolong jelaskan mengenai Galeri dari Thomas Doughty (pelukis)

Goodyear, Frank, Jr. Thomas Doughty 1793-1856: An American Pioneer in Landscape Painting. Pennsylvania Academy of the Fine Arts, Philadelphia; Philadelphia, 1973: 17, 26, no.28.

Howat, John K. "The Thomas Doughty Exhibition." American Art Review'' 1 (January–February 1974):