Of this adventure he writes with more enthusiasm than he is wont to show. He wishes his readers to understand that it was not a sudden descent, but the culmination of five months' steady work. He had watched the bank until he knew the habits of its manager and the quality of its locks. He "was satisfied from all he saw that by hard persistent work the bank could be cleaned out completely." It was on a July day in 1867 that the scheme first took shape in Moore's mind. He had stopped at noon at the hotel at Concord for food, and saw the cashier of the bank returning from his dinner. The bank had been closed during his absence [thus he tells his simple story], and he now unlocked the street door and left the key in the lock. I followed him upstairs and saw him unlock the outer and inner doors of the vault, and also the door of the burglar-box. I presented a hundred-dollar note and asked to have it changed. Being accommodated, I left the place, observing as I went out that the lock on the street door was a heavy one of the familiar tumbler variety, and that it had a wooden back. Thus the train was laid, and in three months came the explosion. Impressions were taken of locks, keys were provided, a waggon and team were held in readiness, and one day as the cashier left the bank to get his dinner, Langdon W. Moore, with a meal-bag concealed under his vest, quietly opened the front door and entered the bank. One check he knew. As he went in a girl of twelve tried to follow him--a near relative of the cashier. The exercise of a little tact satisfied her that the directors were in session, and she ran off to her playmates under the big elm at the opposite corner of the street. Moore lost no time in locking the door behind him, in opening all the locks, which yielded to his cunning and foresight, and in packing the meal-bag full of bonds, bank-notes, and plate. He accomplished the deed without haste, and by the time that the cashier had finished his dinner Moore had disappeared with his bag, and his waggon, and his friends, and left no trace behind.