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

1 Mr. Lincoln once described this journey to me. He said the ground had not yet yielded up the frosts of winter; that during the day the roads would thaw out on the surface and at night freeze over again, thus making travelling, especially with oxen, painfully slow and tiresome. There were, of course, no bridges, and the party were consequently driven to ford the streams, unless by a circuitous route they could avoid them. In the early part of the day the latter were also frozen slightly, and the oxen would break through a square yard of thin ice at every step. Among other things which the party brought with them was a pet dog, which trotted along after the wagon. One day the little fellow fell behind and failed to catch up till after they had crossed the stream. Missing him they looked back, and there, on the opposite bank, he stood, whining and jumping about in great distress. The water was running over the broken edges of the ice, and the poor animal was afraid to cross. It would not pay to turn the oxen and wagon back and ford the stream again in order to recover a dog, and so the majority, in their anxiety to move forward, decided to go on without him. “But I could not endure the idea of abandoning even a dog,” related Lincoln. “Pulling off shoes and socks I waded across the stream and triumphantly returned with the shivering animal under my arm. His frantic leaps of joy and other evidences of a dog's gratitude amply repaid me for all the exposure I had undergone.”