UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF COLORADO AND ADJACENT TERRITORIES. By F. V. Hayden.

UNITED STATES GEOLOGICAL SURVEY. J. W. Powell, Director. Second Annual Report, 1880 and 1881.

ATLAS OF MONOGRAPHS AND HISTORY OF GRAND CANON OF COLORADO. By Major Dutton.

UNITED STATES GEOLOGICAL EXPLORATIONS. By Clarence King.

UNITED STATES GEOLOGICAL SURVEY. By Lieutenant Wheeler, of Corps of Engineers. Vol. III, 1875.

UNITED STATES REPORT ON DAKOTA. By Lieutenant Warren.

UNITED STATES SURVEY OF IDAHO, MONTANA, ETC.

UNITED STATES REPORT ON NEVADA AND ARIZONA.

EXPLORING EXPEDITION FROM SANTA FE TO JUCTION OF GRAND AND GREEN RIVERS, 1859. By Major Malcomb.

UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE ROCKY MOUNTAIN REGION. Contribution to Ethnology. J. W. Powell, Director. Vol. IV, 1881.

MINING STATISTICS WEST OF THE ROCKY MOUNTAINS. By R. H. Raymond, United States Commissioner of Mining.

ELEVENTH ANNUAL REPORT OF THE UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF IDAHO AND WYOMING, 1877. By F. V. Hayden.

SECOND ANNUAL REPORT OF THE BUREAU OF ETHNOLOGY. By J. W. Powell.

UNITED STATES CENSUS FOR 1880.

REPORTS TO UNITED STATES GOVERNMENT ON MINERAL RESOURCES OF THE UNITED STATES. By J. Ross Browne.

BULLETINS OF THE UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES. By F. V. Hayden. Vols. I and II.

SEVENTH ANNUAL REPORT OF THE UNITED STATES GEOLOGICAL SURVEY 1873. By F. V. Hayden.

TENTH ANNUAL REPORT OF THE UNITED STATES GEOLOGICAL SURVEY FOR 1876. By F. V. Hayden.

EXPEDITION TO GREAT SALT LAKE OF UTAH. By H. Stansbury, Captain of Topographical Engineers of United States Army.

EXPEDITION TO THE SOURCES OF THE MISSISSIPPI, ARKANSAS, KANSAS, and LA PLATTE RIVERS. By Major Z. M. Pope.

NATIVE RACES OF THE PACIFIC COAST OF NORTH AMERICA. By Herbert Howe Bancroft.

HISTORY OF THE UNITED STATES. By George Bancroft.

PREHISTORIC AMERICA. By the Marquis de Nadailac.

ATLANTIS; THE ANTEDILUVIAN WORLD. By Ignatius Donelley.

HISTORY OF THE NORTHERN PACIFIC RAILROAD. By E. V. Smalley.

REPORTS OF THE DIRECTOR OF THE MINT. Washington, D.C.

PREHISTORIC TIMES AS ILLUSTRATED BY ANCIENT RUINS, ETC. By Sir John Lubbock.

RESOURCES OF ARIZONA. By P. Hamilton.

TALES OF THE COLORADO PIONEERS. By Alice Polk Hill.

THE RESOURCES OF THE ROCKY MOUNTAINS. By E. J. Farmer.

THE UNION PACIFIC TOURIST. By the Company.

REPORTS OF THE STATE BOARDS OF AGRICULTURE OF KANSAS, NEBRASKA, COLORADO, AND CALIFORNIA.

ARTESIAN WELLS ON THE GREAT PLAINS. By Department of Agriculture, Washington.

NUMBER AND VALUE OF FARM ANIMALS. By Department of Agriculture, Washington.

REPORTS OF NATIONAL CONVENTION OF CATTLEMEN FOR 1884 AND 1885.

REPORTS OF THE CHAMBER OF COMMERCE OF DENVER AND SAN FRANCISCO.

THE MINING INDUSTRY. By Mining Association of Denver.

CALIFORNIA AS IT IS. By San Francisco Call Company.

REPORT OF THE WYOMING STOCK-GROWERS' ASSOCIATION.

BITS OF TRAVEL AT HOME. By H. H.

RESOURCES OF COLORADO. By J. Alden Smith, State Geologist.

LEADVILLE. By L. A. Kent.

REPORTS OF THE PUBLIC SCHOOLS OF KANSAS CITY, OMAHA, DENVER, SAN FRANCISCO, ETC.

THE WONDERLAND ROUTE TO PACIFIC COAST. By Northern Pacific Railroad.

ILLUSTRATED NEW MEXICO. By M. G. Ritch.

COLORADO. By Frank Fossett.

MONTANA AND YELLOWSTONE PARK. By Robert E. Strahorn.

GUNNISON, COLORADO'S BONANZA COUNTRY. By John K. Hallowell, Geologist.

HISTORY OF OREGON AND CALIFORNIA. By Robert Greenhouse.

HISTORY OF OREGON. By Dr. William Barrows.

HISTORY OF KANSAS. By Professor Spring.

BACHELDER'S RESOURCES OF DAKOTA.

PLAINS OF THE GREAT WEST. By R. I. Dodge.

ADVENTURES IN THE APACHE COUNTRY. By J. Ross Browne.

MINES OF COLORADO. By 0. J. Hollister.

THIRTY YEARS' RESIDENCE WITH INDIAN TRIBES. By H. R. Schoolcraft.

THE TOURIST'S OVERLAND GUIDE. By George A. Crofutt.

GRIP-SACK GUIDE OF COLORADO. By George A. Crofutt.

THE NEW WEST. By Charles Loring Brace.

THE AZTECS. From the French of L. Biaut. By J. L. Garner.

CAMPS IN THE ROCKY MOUNTAINS. By William A. Baillie-Grohman.

COLORADO. By Bayard Taylor.

HEART OF THE CONTINENT. By Fritz Hugh Ludlow.

THE YOSEMITE GUIDE-BOOK. Professor J. D. Whitney, State Geologist of California.

THE YELLOWSTONE NATIONAL PARK. By H. J. Wisner.

HANDBOOK OF THE PACIFIC COAST. By William R. Bentley.

THE CREST OF THE CONTINENT. By Ernest Ingersoll.

WONDERS OF THE YELLOWSTONE. By James Richardson.

A LADY'S LIFE IN THE ROCKY MOUNTAINS. By Isabella L. Bird.

THREE YEARS IN ARIZONA AND NEW MEXICO. By S. W. Cozzens.

RESOURCES OF CALIFORNIA. By John S. Hittell.

NEW COLORADO AND THE SANTA FE TRAIL. By A. A. Hayes, Jr.

LIFE OF KIT CARSON. By J. S. C. Abbott.

LIFE OF JOHN C. FREMONT. By G. W. Upham.

THE ROCKY MOUNTAIN SAINTS. By T. B. H. Stenhouse.

FIRST, SECOND, THIRD, FOURTH, AND FIFTH REPORTS OF THE STATE MINERALOGIST OF CALIFORNIA. By Henry G. Hanks.

EL DORADO. By Bayard Taylor.

HOLMES' UNITED STATES REPORT ON ANCIENT RACES IN SOUTHWESTERN COLORADO. 1875 and 1876.

JACKSON'S UNITED STATES REPORT ON ANCIENT RACES. 1877.

MINING CAMPS. By Charles Howard Shinn.

COMSTOCK'S HISTORY OF THE PRECIOUS METALS.

STEWART'S IRRIGATION.

HYDRAULIC MINING IN CALIFORNIA. By A. J. Browne.

RESOURCES OF MONTANA. By J. S. Harris and W. A. Clark, Commissioners.

OREGON AND WASHINGTON. By Northern Pacific Railroad Company.

SPAULDING ON PUBLIC LANDS.

SCRIBNER'S STATISTICAL ATLAS.