A Geological Reconnaissance Across Idaho (Classic Reprint)

A Geological Reconnaissance of Panama (Classic Reprint)

A Geological Reconnaissance in Southern Oregon (Classic Reprint)

A Geological Reconnaissance in Northwestern Oregon (Classic Reprint)

The Geology of the Burnley Coalfield (Classic Reprint)

Report of a Geological Reconnaissance Made in 1835 (Classic Reprint)

Report of a Reconnaissance (Classic Reprint)

The Geology of the Country Around Mevagissey (Classic Reprint)