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USGS1874

[Seventh] Annual Report of the United States Geological and Geographical Survey of the Territories, embracing Colorado: being a report of progress of the exploration for the year 1873

In accordance with the recommendation of the Secretary of the Interior, an appropriation of $75,000 was made for the systematic survey of Colorado, and, at as early a date as the season would permit, the party reached Denver. This place formed our starting point for the various portions of the territory which had previously been marked out for the season's work. Early in the winter, the area to be surveyed in Colorado was divided into three districts, and a preliminary map was constructed, based on the land-surveys of the portions concerning which there was any definite knowledge. We found that none of the existing maps were of any great service in the more elevated portions of Colorado. The area to be surveyed comprised the eastern portion of the mountainous part of Colorado, and it was separated into three districts: North, Middle, and South districts.

Colorado↗
USGS1875

Annual report upon explorations and surveys in the Department of the Platte: Being Appendix QQ of the Annual Report of the Chief of Engineers for 1875

There are at nearly all the headquarters of the tour military divisions and the nine military departments, officers of engineers, whose chief duty it is to collect geographical and other information; and these officers do, by means of their own explorations and surveys, and by collecting the notes, sketches, and maps made by the officers and soldiers belonging to the western posts, in their scouts and campaigns, add much, year by year, to the knowledge of the interior of the country, which is not only essential to the generals in command of these departments and divisions, but useful to the country generally. Capt. W.S. Stanton, on duty with the commanding general of the Department of the Platte, was engaged in the surveys and establishment of the monuments and boundary-lines of the military reservation of Fort Sanders, embracing an area of thirty square miles, pursuant to an act of Congress approved June 9, 1874, the survey of the military reservation of Fort Hartsuff, embracing two townships, and the selection, survey, and examination of the site for a bridge to be built by the United States over the North Platte at Fort Laramie. During the year every post in the department has been supplied with a set of reconnoitering instruments, embracing odometer, prismatic compass, and set of drawing-instruments. Maps and topographical note-books have been issued with instructions, designed to take advantage of every movement of troops to secure geographical and topographical information sufficiently accurate for use in revising and extending the maps of the department. In the Office attention has been given to the collection of information from all sources available. Maps have been made of the reservations surveyed, drawings of the sub-structure for the new bridge over the Platte, and various tracings and numerous sketches have been made. Fifty-four note-books and one hundred and fifty skeleton maps, each containing three degrees of longitude, have been issued for use in connection with movements of troops. Two hundred and thirty maps have been mounted, and two hundred maps have been issued for the use of officers. Four hundred copies of the map of Wyoming Territory, which was constructed by Captain Stanton's predecessor, Capt. W. A. Jones, Corps of Engineers, have been lithographed.

Nebraska, Wyoming↗