Horace Greeley, in New York Tribune, has attacked mileage claims of members. Resolution is offered directing Committee on Mileage to report abuses and inquire whether Greeley's article amounts to allegation of fraud. Lincoln calls for division of resolution into two, which is ordered. First resolution is adopted without roll call; second passes, 101-43, Lincoln voting nay.Globe.

[Frances Stuart Todd, Mary Lincoln's cousin, marries Thomas H. Shelby, a lawyer from Lexington, Kentucky, at the First Presbyterian Church in Springfield.

Lincoln party inspects the properties of the Illinois Central Railroad around the Chicago area until early evening. Chicago Tribune, 20 July 1859, Page 1.

Lincoln party departs Chicago for Cairo, Illinois. Chicago Tribune, 20 July 1859, Page 1.

Lincoln party travels between Springfield, Illinois and Freeport, Illinois along the Galena Line of the Illinois Central. The party would stop at every Illinois Central terminal along the way to inspect and assess the property. They only traveled during daylight hours.

Lincoln party stops in Freeport, Illinois to inspect the properties of the Illinois Central and spend 2 hours being shown around town. Freeport Weekly Journal, 21 July 1859., Page 3.

Lincoln party arrives in Dunleith, Illinois to inspect the properties of the Illinois Central. Freeport Weekly Journal, 21 July 1859., Page 3.

Lincoln party arrives in Dubuque, Iowa, across the Mississippi River from Dunleith, to stay at the Julien House hotel. Dubuque Herald., 19 July 1859, Page 3.

Lincoln party spends the Sabbath in Dubuque, Iowa, staying at the Julien House hotel. Dubuque Herald, 19 July 1859, Page 3.

Lincoln party probably arrives in Cairo and inspects the properties of the Illinois Central Railroad before heading north towards Springfield, Illinois and home. The party would stop at every Illinois Central terminal along the way to inspect and assess the property.