Testimonial Written for Isaac Larrance 
Having hastily examined ``Larrance's Post-office Chart'' and considered the principle upon which it is arranged, I think it will prove a great convenience to Post-Masters and others whose business lead them to search out particular localities upon maps.
 ADS, owned by R. E. Burdick, New York City. Larrance's Post Office Key . . . was published at Plainville, Ohio, in 1881. Presumably Lincoln examined a forerunner of the later publication. According to a signed statement accompanying Lincoln's testimonial, Larrance's children, Ellis Lawrence and Phebe Lawrence Wardan, maintain that the name is properly spelled ``Lawrence.''