The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Niagara Falls. The Cave of the Winds
Rock of Ages and Cave of the Winds. Niagara Falls
Cave of the Winds. Niagara Falls
Rock of Ages. Cave of the Winds. Niagara Falls. N. Y. 1906
Horseshoe Falls from Goat Island Niagara Falls. Cave of the Winds or Rock of Ages
Cave of the winds. Niagara Falls. H. L. Woehler
Ages. Cave of the Winds. Niagara Falls. N. Y