On February 27, 1860, President Abraham Lincoln poses for the first of several portraits by noted Civil War-era photographer Mathew Brady. Days later, the photograph is published on the cover of Harper’s Bazaar with the caption, "Hon. Abram [sic] Lincoln, of Illinois, Republican Candidate for President."

On April 3, 1860, the first Pony Express mail, traveling by horse and rider relay teams, simultaneously leaves St. Joseph, Missouri, and Sacramento, California. Ten days later, on April 13, the westbound rider and mail packet completed the approximately 1,800-mile journey and arrived in Sacramento, beating the eastbound packet’s arrival in St. Joseph by two days and setting a new standard for speedy mail delivery. Although ultimately short-lived and unprofitable, the Pony Express captivated America’s imagination and helped win federal aid for a more economical overland postal system. It also contributed to the economy of the towns on its route and served the mail-service needs of the American West in the days before the telegraph or an efficient transcontinental railroad.

Abraham Lincoln, a one-time U.S. representative from Illinois, is nominated for the U.S. presidency by the Republican National Convention meeting in Chicago, Illinois. Hannibal Hamlin of Maine was nominated for the vice presidency.

British troops occupying Peking, China, loot and then burn the Yuanmingyuan, the fabulous summer residence built by the Manchu emperors in the 18th century. China’s Qing leadership surrendered to the Franco-British expeditionary force soon after, ending the Second Opium War and Chinese hopes of reversing the tide of foreign domination in its national affairs.

Abraham Lincoln is elected the 16th president of the United States over a deeply divided Democratic Party, becoming the first Republican to win the presidency. Lincoln received only 40 percent of the popular vote but handily defeated the three other candidates: Southern Democrat John C. Breckinridge, Constitutional Union candidate John Bell, and Northern Democrat Stephen Douglas, a U.S. senator for Illinois.