The Theory and Practice of Surveying, Robert Gibson, 1814

Lincoln Learns a Trade

After a general store that Lincoln operated with William Berry in New Salem “winked out” in 1833, Lincoln found work as village postmaster and deputy surveyor of Sangamon County. According to Lincoln, he “procured a compass and chain, studied Flint, and Gibson a little, and went at it. This procured bread, and kept body and soul together.” Lincoln used this book to learn the trade and signed his name on a back page.