As he came down to breakfast the next morning a young lady entered and came forward with a smile, exclaiming, "I have come to congratulate you." "Upon what?" inquired the professor. "Upon the passage of your bill," she replied. "Impossible! Its fate was sealed last evening. You must be mistaken." "Not at all," answered the young lady, the daughter of Morse's friend, the Commissioner of Patents, H.L. Ellsworth; "father sent me to tell you that your bill was passed. He remained until the session closed, and yours was the last bill but one acted upon, and it was passed just five minutes before the adjournment. And I am so glad to be able to be the first one to tell you. Mother says you must come home with me to breakfast."
Morse, overcome by the intelligence, promised that his young friend, the bearer of these good tidings, should send the first message over the first line of telegraph that was opened.
He writes to Alfred Vail that day: "The amount of business before the Senate rendered it more and more doubtful, as the session drew to a close, whether the House bill on the telegraph would be reached, and on the last day, March 3, 1843, I was advised by one of my Senatorial friends to make up my mind for failure, as he deemed it next to impossible that it could be reached before the adjournment. The bill, however, was reached a few minutes before midnight and passed. This was the turning point in the history of the telegraph. My personal funds were reduced to the fraction of a dollar, and, had the passage of the bill failed from any cause, there would have been little prospect of another attempt on my part to introduce to the world my new invention."
The appropriation by Congress having been made, Morse went to work with energy and delight to construct the first line of his electric telegraph. It was important that it should be laid where it would attract the attention of the government, and this consideration decided the question in favor of a line between Washington and Baltimore. He had as assistants Professor Gale and Professor J.C. Fisher. Mr. Vail was to devote his attention to making the instruments and the purchase of materials. Morse himself was general superintendent under the appointment of the government and gave attention to the minutest details. All disbursements passed through his hands. In point of accuracy, the preservation of vouchers, and presentation of accounts, General Washington himself was not more precise, lucid, and correct. Ezra Cornell, afterward one of the most successful constructors of telegraph lines, was employed to take charge of the work under Morse. Much time and expense were lost in consequence of following a plan for laying the wires in a leaden tube, and it was only when it was decided to string them on posts that work began to proceed rapidly.