An essay on the ancient & present state of the Welsh language with particular reference to its dialects, being the subject proposed by the Cambrian society for the year 1822.

"Appendix, containing specimens of Welsh composition in prose and verse", pp. 52-112.

The Cambrian traveller's guide, in every direction; containing remarks made during many excursions, in the principality of Wales, and bordering districts, augmented by extracts from the best writers.

Preface signed: George Nicholson.

Report on the United States and Mexican boundary survey, made under the direction of the secretary of the interior,

v. 1. pt. 1. Personal account. General description of the country. Lower Rio Bravo. From mouth of Devil's river to El Paso del Norte. Sketch of territory acquired by treaty of Dec. 30, 1853. From the 111th meridian of longitude to the Pacific ocean; Report of Lieut. Michler. Astronomical and geodetic work. Meteorology. pt. 2. Geological reports of Dr. C. C. Parry and assistant Arthur Schott. Notes by W. H. Emory. Paleontology and geology of the boundary, by

Report of the Committee on the western boundary of Maryland. A paper read before the Maryland historical society, December 9th, 1889.

Signed: Wm. Hand Browne, Albert Ritchie, committee.

Final report of the Virginia Commissioners on the Maryland and Virginia boundary to the governor of Virginia.

Report.--Memoranda of a journal of the Virginia Commisioners: Correspondence.--Journal of the joint commission of Maryland and Virginia.

Report and accompanying documents of the Virginia commissioners appointed to ascertain the boundary line between Maryland and Virginia

"Gov. Tazewell's manuscript": p. 264-283 of Appendix.

Boundary between British Guiana and Venezuela : Case...

Mode of access: Internet.

Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California,

Mode of access: Internet.

A lower Cambrian edrioasterid, Stromatocystites walcotti (with one plate),

Publication 2534.