Lincoln writes Leonard Swett that he wants to see him and Judge Davis about their going to Pennsylvania. He gives Nicolay note of introduction to R. W. Thompson, with whom Nicolay is to confer. Abraham Lincoln to Leonard Swett, 16 July 1860, CW, 4:83-84; Abraham Lincoln to Richard W. Thompson, 16 July 1860, CW, 4:84.

Lincoln writes $5 check to Second Portugese Church, Springfield. Photocopy.

In the evening, Sanford's opera troupe "serenade[s]" Lincoln. A newspaper reports, "Those who had the pleasure of hearing it speak in the highest terms of [the troupe's] performance." Illinois Daily State Journal (Springfield), 18 July 1860, 3:2.