Fort Sumter: Charleston Harbor, S.C., Confederate States of America.

The invention of lithography at the turn of the 19th century opened a new world for bird illustrators. It brought many advantages to the artist — ease of use, a softness of line, and a new freedom to effect bold designs with a wide range of light and dark tones. Most of the fine ornithology books of the 19th century were prepared in folio format with hand-colored lithographic plates. The lithographic process is one of flat surface printing from a design drawn on stone. It is based on the principle of the resistance of grease to water. There are no raised or cut portions, as there are in engraving and etching. The image is drawn with greasy ink or chalk on a smooth stone, and the rest of the stone is treated with gum arabic and nitric acid. The gum retains the lines of the greasy design, which repels the water used in printing. Special paper and ink, as well as a special press, are needed to produce the prints. First used for bird illustration in 1820, lithography was widely adopted by the best artists of the century. The technique was popular because the artist could draw his own illustration directly on the lithographic stone. Prints could be made from the drawing with no intermediary such as an engraver. Accurately reproduced and then colored by hand, the resulting illustrations gave the impression of original watercolor paintings.

New York City from 1835 to 1907 headed first by Nathaniel Currier, and later jointly with his partner James Merritt Ives. The prolific firm produced prints from paintings by fine artists as black and white lithographs that were hand-colored. The firm called itself "the Grand Central Depot for Cheap and Popular Prints" and advertised its lithographs as "colored engravings for the people". The firm adopted the name "Currier and Ives" in 1857.

Named after revolutionary hero General Thomas Sumter, Fort Sumter was unfinished when the Civil War began. On December 26, 1860, six days after South Carolina seceded from the Union, U.S. Army Major Robert Anderson secretly relocated 127 men of the 1st U.S. Artillery to Fort Sumter thinking that it provides a stronger defense against South Carolina militia attacks. For a few months, South Carolina 's calls for evacuation of Fort Sumter were ignored by Union. On Friday, April 12, 1861, at 4:30 a.m., Confederate batteries opened fire on the fort, firing for 34 straight hours. After two hours, the Union started firing back slowly to conserve ammunition. During the fire, one Confederate soldier and two Union soldiers died. The next day the fort was surrendered. The Fort Sumter Union Flag became a popular patriotic symbol. Efforts to retake the fort began on April 7, 1863. After bombardment, the Union navy's started poorly planned boat assault: 8 Union sailors were killed, 19 wounded, and 105 captured. The Confederates did not suffer any casualties. The bombardment of the fort proceeded with a varying degree of intensity until the end of the war but the fort never surrendered. Sherman's advance forced the Confederates to evacuate Charleston and abandon Fort Sumter. The Union formally took possession of Fort Sumter on February 22, 1865. Fort Sumter was in ruins. After the war, the U.S. Army restored the fort and used it as a military installation until 1948 when the fort became a National Monument.