Henry Elliott and Campbell Carrington launched a canvas boat and made a survey of Yellowstone Lake’s hundred-mile shoreline. Later the temperatures of over six hundred hot springs were taken. Sketches were made of many features, and significant names were given, such as Architectural Fountain Geyser. Captain Barlow’s division paid particular attention to the mapping of Snake River’s headwaters. It also made a cursory survey of the Lamar River. Unfortunately most of the data and accompanying photographs were destroyed in the great Chicago fire. This delayed Barlow’s official report until six weeks after the Park Bill was enacted. However, an interesting summary appeared in the _Chicago Journal_ for January 13, 1872. Thus, the report and collection of specimens and photographs by Dr. Hayden represented the principal result of the season’s endeavor.[147] The beauty of Jackson’s photographs and Moran’s paintings could scarcely be denied. Each represented the work of a master. Dr. Hayden’s report to Secretary of Interior, Columbus Delano, was received in February, 1872. He also contributed feature articles to the _American Journal of Science and Arts_ and _Scribner’s_. Thus, a number of authorities had taken up the national park cause without reservation. Indeed, after he became intrigued with the idea of government development, Dr. Hayden’s efforts were so impressive that many people regarded him as the true originator of the movement. In fact, his own enthusiasm unfortunately caused him to make pretensions for which he was severely criticized by his colleagues in the effort.[148] Although Dr. Hayden’s contribution was invaluable, it was not exclusive. It was through the combined effort of the entire Montana delegation, and its powerful friends, that Congress was made receptive and responsive. On December 18, 1871, a bill to create Yellowstone National Park was introduced simultaneously in both houses of Congress. The direct sponsors were Delegate William H. Clagett of Montana and Senator Samuel C. Pomeroy of Kansas. A thorough canvass was made; photographs, specimens, and testimonials did heavy duty in both the Senate and the House. Four hundred copies of _Scribner’s_ containing Langford’s articles were distributed among the congressmen, and all were personally interviewed. The advocates were few, but effective, and there was never any doubt as to the outcome. In the Senate, Pomeroy’s efforts were backed by George F. Edmunds, H. B. Anthony, and Lyman Trumbull. They made an unsuccessful attempt to bring the bill, S392, to a vote on January 22 and 23, but objections were raised, and it came up in calendar order on the thirtieth. Senator Edmunds appealed for unanimous support for the bill. Senators Cameron of Pennsylvania and Morton of Indiana were curious about the number of square miles in the proposed reservation. Senator Pomeroy assured them that, although it was a large tract, there were no arable lands therein because of the elevation.