Francis Preston Blair, Junior (1821‒75) was a member of prominent political family with ties to the border states of Missouri and Maryland but which opposed slavery and stood with Lincoln during the Civil War. After serving two terms in the Missouri Senate, he was elected to the U.S. House of Representatives in 1856 as a Free Soil Democrat, an opponent of the expansion of slavery to the territories. He switched his affiliation to the Republican Party in 1860. During the secession crisis that followed Lincoln’s election, he organized Unionist elements in Saint Louis (including German immigrants opposed to slavery) and did much to keep Missouri in the Union. He left Congress in 1862 and was appointed a brigadier general in the Union army. He raised seven Missouri infantry regiments and led a brigade under General William Tecumseh Sherman at the Battle of Vicksburg. After the war he was elected to the U.S. Senate, where he served one term. The image is from an album of mostly Civil War-era portraits by the famous American photographer Matthew Brady (circa 1823‒96) that belonged to Emperor Pedro II of Brazil (1825‒91), a collector of photography as well as a photographer himself. The album was a gift to the emperor from Edward Anthony (1818‒88), another early American photographer who, in partnership with his brother, owned a company that in the 1850s became the leading seller of photographic supplies in the United States. Dom Pedro may have acquired the album during a trip to the United States in 1876 when he, along with President Ulysses S. Grant, opened the Centennial Exposition in Philadelphia. Brady was born in upstate New York, the son of immigrants from Ireland. Best known for his photographs documenting the battles of the American Civil War, he began his career in 1844 when he opened a daguerreotype portrait studio at the corner of Broadway and Fulton Streets in New York City. Over the course of the next several decades, Brady produced portraits of leading American public figures, many of which were published as engravings in magazines and newspapers. In 1858 he opened a branch in Washington, DC. The album, which also contains a small number of non-photographic prints, is part of the Thereza Christina Maria Collection at the National Library of Brazil. The collection is composed of 21,742 photos assembled by Emperor Pedro II throughout his life and donated by him to the national library. The collection covers a wide variety of subjects. It documents the achievements of Brazil and Brazilians in the 19th century and also includes many photographs of Europe, Africa, and North America.