Our Banner in the Sky is an iconic painting by Frederic Edwin Church was inspired by a colorful sunset made to resemble the Union flag as implying divine support for the Union to prevail in the American Civil War.
Hudson-river-school
Frederic Edwin Church - Niagara Horseshoe falls
Thomas Couture - Romans during the Decadence
Georg Caleb Bingham - Fur traders descending the Missouri
Thomas Cole - The Course of the Empire- 3. Consummation
Thomas Cole - The Course of the Empire- 4. Destruction
Thomas Cole - The Course of the Empire- 5. Desolation
Thomas Cole - The course of the Empire- 1. Savage state
Thomas Cole - The Course of the Empire- 2. The Arcadian or Pastoral State