1. Upper Silurian Cayugan series, Niagara frontier, New York;Rickard,1966
2. Eurypterid horizons and the stratigraphy of the upper Silurian and lower Devonian of western New York;Ciurca,1973
3. Correlation of the Silurian rocks in New York state;Fisher,1960
4. Stratigraphy of Medinan group, New York and Ontario;Fisher;Bull. Am. Ass. Petrol. Geol.,1954
5. Stratigraphy of the Genesee Gorge at Rochester;Grasso,1973