Memoirs of Delvine : a brief account of the Roman occupation of Delvine or Inchtuthill in the county of Perth /

Mode of access: Internet.

Flood plain management study : Rio Grande near Del Norte, Colorado /

Chiefly plates.

Flora of the northwest coast, including the area west of the summit of the Cascade Mountains, from the forty-ninth parallel south to the Calapooia Mountains on the south border of Lane County, Oregon.

Mode of access: Internet.

Catalogue of the phænogamous and filicoid plants of New Castle County : arranged according to the natural system : with the synomyms [!] of modern authors.

Mode of access: Internet.

Catalogue of the phaenogamous and filicoid plants of New Castle county.

Mode of access: Internet.

A history of Northumberland. issued under the direction of the Northumberland county history committee.

A continuation of John Hodgson's A history of Northumberland, 1820-58.