The straits of Niagara / 
Darby,.
Hall, Sidney.
[New York :  Negro Universities Press, 
1969]
Facsimile.
In: A Excursion through the United States and Canada during the years 1822-23. By an English gentleman [i.e. W.N. Blane]. p. 406.
Inset: Vertical Section of ... the Falls.