D.J. Angus and friends boarding the Shawnee on the Kentucky River.

D.J. Angus and friends on board the Shawnee paddleboat on the Kentucky River.

Black and white photograph in portrait orientation of the Lower Falls from Red Rock, Yellowstone National Park.

Black and white photograph of falls at the Mill River (Rivière du Moulin) in Québec.

River in Tennessee.

River in Tennessee.

River in Tennessee.

Black and white photograph looking northwest along Abbot's Brook in Trenton, New Jersey, near Argillite site.

Black and white photograph of upper salmon pool at Gravel Lake [likely Lac des Gravier].