Letter from the Secretary of the Treasury, transmitting a Report upon the Subject of a System of Telegraphs for the United States, December, 11, 1837, 67 Circular to certain Collectors of the Customs, Commanders of Revenue Cutters, and other persons, March 10th, 1837, 68 Letter from S. F. B. Morse to the Secretary of the Treasury, September 27, 1837, 69 Letter from S. F. B. Morse to the Secretary of the Treasury, November 28th, 1837, 73 Letter from S. F. B. Morse to the Editors of the Journal of Commerce, Sept’r 4, 1837, 74 Specimen of Telegraphic Writing made by Means of Electricity, at the distance of one-third of a mile, 75 Report of the Committee on Commerce to the House of Representatives, April 6, 1838, 76 Report of the Franklin Institute, Philadelphia, February 8, 1838, 79 Letter from S. F. B. Morse to the Hon. F. O. J. Smith, February 15, 1838, 80 Letter from S. F. B. Morse to the Hon. F. O. J. Smith, February 22, 1838, 82 Report of the Committee on Commerce to the House of Representatives, Dec’r 30, 1842, 83 A Bill to test the Practicability of Establishing a System of Electro Magnetic Telegraphs by the United States, 87 Letter from Professor Henry to Professor Morse, February 24, 1842, 87 Report of the American Institute on the Electro Magnetic Telegraph, Sept’r 12, 1842, 88 Letter from S. F. B. Morse to the Hon. C. G. Ferris, December 6, 1842, 89 Communication from the Secretary of the Treasury, transmitting the Report of Professor Morse, announcing the Completion of the Electro Magnetic Telegraph, between the Cities of Washington and Baltimore, June 4, 1844, 97 Letter from S. F. B. Morse to Hon. McClintock Young, June 3, 1844, 98 Letter from the Secretary of the Treasury, transmitting a Letter from S. F. B. Morse, relative to the Magnetic Telegraph, December 23, 1844, 101 Letter from S. F. B. Morse to the Hon. G. M. Bibb, December 12, 1844, 101 Report of the Committee of Ways and Means to the House of Representatives, March 3, 1845, 107 HISTORY OF TELEGRAPHS EMPLOYING ELECTRICITY IN VARIOUS WAYS FOR THE TRANSMISSION OF INTELLIGENCE.