Wikimedi'Òc

Wpdms usgs photo lake tonawanda.jpg - MGA73bot2

PSM V55 D165 Sectional diagram of us side niagara river erosion.png - Ineuw

Annual report of the Regents (1900) (18245788400).jpg - Fæ

Annual report (1912) (18243593799).jpg - Fæ

Bulletin - New York State Museum (1901) (19819614414).jpg - Fæ

Rochester Shale Niagara Gorge.jpg - Wilson44691

Bulletin of the Buffalo Society of Natural Sciences (1901) (20447325865).jpg - Fæ

Bulletin of the Buffalo Society of Natural Sciences (1901) (20260686749).jpg - SteinsplitterBot

Bulletin of the Buffalo Society of Natural Sciences (1901) (20438646392).jpg - SteinsplitterBot

FMIB 39500 Section of strata along the Niagara gorge from the falls to the lake- 1,3, strata of hard rock; 2,4, of soft rock.jpeg - BMacZeroBot

Niagara, the Gorge, Niagara Falls, N. Y (NYPL b12647398-69893).tiff - Fæ

Niagara Falls, Canada (6).jpg - Polka0505

Niagara River Rapids (1504958904).jpg - DarwIn