William H. Herndon, Jesse William Weik, Herndon's Lincoln: The True Story of a Great Life, Etiam in minimis major, The History and Personal Recollections of Abraham Lincoln by William H. Herndon, for twenty years his friend and Jesse William Weik

In the case of Parker vs. Hoyt, tried in the United States Court in Chicago, Lincoln was one of the counsel for the defendant. The suit was on the merits of an infringement of a patent water wheel. The trial lasted several days and Lincoln manifested great interest in the case. In his earlier days he had run, or aided in running, a saw-mill, and explained in his argument the action of the water on the wheel in a manner so clear and intelligible that the jury were enabled to comprehend the points and line of defense without the least difficulty. It was evident he had carried the jury with him in a most masterly argument, the force of which could not be broken by the reply of the opposing counsel. After the jury retired he became very anxious and uneasy. The jury were in another building, the windows of which opened on the street, and had been out for some two hours. “In passing along the street, one of the jurors on whom we very much relied,” relates Lincoln's associate in the case,¹ “he being a very intelligent man and firm in his convictions, held up to him one finger. Mr. Lincoln became very much excited, fearing it indicated that eleven of the jury were against him. He knew if this man was for him he would never yield his opinion. He added, if he was like a juryman he had in Tazewell county, the defendant was safe. He was there employed, he said, to prosecute a suit for ”