Lincoln's arithmetic page, March 1, 1826

A Self-Taught Man

This is a page from an arithmetic book that Lincoln compiled as a youth by copying problems from published sources. Later in life, Lincoln expressed regret for “his want of education” and did what he could “to supply the want,” which included studying Euclidean geometry to strengthen his mind. After Lincoln’s death in 1865, his stepmother, Sarah Bush Johnston, gave the book to his law partner, William H. Herndon; the sheets were later dispersed and some cannot be found.