Abraham Lincoln grew up in Indiana between 1816 and 1830, where he, his father, stepmother, and assorted kinfolk lived in the log cabin shown here. After becoming a successful lawyer in Springfield, Illinois, Lincoln and his wife, Mary, moved into the home shown here, which highlights the opportunities the free-labor system offered to all Americans, according to Lincoln. Log cabin: Meserve-Kunhandt Collection; Springfield home: © Bettmann/Corbis.