In 1818, Dr. Peter Shoenberger, owner of the Huntingdon Furnace, in Huntingdon County, had made extensive shipments of iron to Harper’s Ferry and prepared to cross the mountains to receive his pay. Lewis and his band knew of this proposed trip and determined to waylay and rob him. The sum to be collected amounted to more than $13,000, and the ironmaster’s credit would be ruined if this sum was not in deposit in Bellefonte by a certain date. While they were scheming to rob Shoenberger news reached them that their victim was returning home by way of the Cumberland Valley and Harrisburg. When Lewis and his gang arrived at Harrisburg they learned that the doctor, warned of their designs, had again changed his route, but the highwaymen knew the country and soon got in advance of their victim. In the early hours of the morning, a few miles east of Bellefonte, the doctor was confronted by a large man on horseback, who, with a pistol in hand, ordered him to “stand and deliver.” The doctor was in a dilemma; he faced financial ruin or loss of life. As he reached for his saddlebag he heard a shout and at the same time saw the top of a Conestoga wagon reaching the top of the hill. The wagoners were encouraging their horses as the doctor yelled in desperation, “Men, I am being robbed. Help! Help!” Lewis snapped his pistol, but it failed to discharge. Connelly, a mate of Lewis, rode up and would have killed the doctor, but for Lewis. A shot by one of the wagoners struck Connelly in the shoulder, but he and Lewis escaped in the woods. During his operations in New York City Lewis formed a partnership with other noted crooks. Each one signed an ironclad compact with blood drawn from the veins of each member as they formed in a circle, while Lewis held a basin to receive the blood of each, which was used as ink. Lewis knew that Mrs. John Jacob Astor was to attend a well-advertised auction sale, where she made many purchases of rare laces and jewelry, placing them in a reticule, which she kept on a bench close by her side. While she was engaged in conversation, Lewis stole the bag and made his escape. He failed to divide the plunder with the gang, but gave it all to his wife, barely escaping their wrath. Lewis headed for Princeton, where, he said, he found “empty heads and full purses.” He succeeded in fleecing many of the students of all the money they had or could obtain. His next exploits were in Philadelphia, where he was the leader of a band which attempted to decoy Stephen Girard out of the city into the country, to keep him in confinement until forced to purchase his freedom. They also planned to dig a tunnel from the Dock Street sewer to Girard’s banking house, where they intended to reach the bank vaults from below. The dangerous illness of Lewis’ daughter caused a delay in these plans, his gang drifted apart, and the scheme was abandoned.