Question: Melville D. Landon travelled to Russia with which Kentucky politician known as the "Lion of White Hall"?

<P0-S0> Melville De Lancey Landon (1839–1910), also known by his pen name Eli Perkins, was an American humorist, lecturer, and journalist. <P0-S1>  Landon was born in Eaton, New York, in 1839, the son of John and Nancy Marsh Landon. <P0-S2>  He attended Madison University (now Colgate University) for one year, and graduated from Union College in 1861. <P0-S3>  After graduation, he obtained a position in the United States Treasury, and served in the Civil War under General Augustus Louis Chetlain. <P0-S4>  He left the army in 1864, and became a cotton planter in Louisiana and Arkansas. <P0-S5>  In 1867 he traveled abroad in Russia as secretary to Cassius M. Clay, Minister to Russia. <P0-S6>  He returned to the United States in 1870, and the following year published his first book, "The Franco-Prussian War in a Nutshell". <P0-S7>  He wrote and compiled several books of humor, and was past president of the New York News Association. <P0-S8>  He died at his home in Yonkers, New York on December 16, 1910 at the age of 71, after suffering from locomotor ataxia for some six years. <SEP> <P1-S0> White Hall (also known as Whitehall Tavern and White Hall Farm) is a house and former tavern located in Toano, Virginia. <P1-S1>  It was built in 1805 by William Geddy and is still owned and maintained by the original family. <P1-S2>  It is listed on the United States National Register of Historic Places. <SEP> <P2-S0> Cassius Marcellus Clay ( ; October 19, 1810 – July 22, 1903), nicknamed the "Lion of White Hall", was a Kentucky planter, politician, and emancipationist who worked for the abolition of slavery. <P2-S1>  He freed the slaves that were handed down as his inheritance from his father. <P2-S2>  Those freed slaves were allowed to stay and were paid a wage. <P2-S3>  He was appointed by President Abraham Lincoln as the United States minister to Russia during the American Civil War, and is credited with gaining Russian support for the Union. <SEP> <P3-S0> The White Hall Historic District is a 11 acre historic district in White Hall, Illinois. <P3-S1>  The district, which includes two blocks of Main Street and roughly one block of Jacksonville Avenue, encompasses White Hall's historic commercial district. <P3-S2>  Most buildings in the district are brick structures built in the 1870s, White Hall's main period of commercial development; however, some date from the early 20th century as well. <P3-S3>  Some of the early buildings in the district include the White Hall Foundry, which produced cast iron pieces for several other buildings; the Grange Block and the White Hall National Bank, two bank buildings with complementary styling; the Dawdy Building, the only surviving wood-frame structure in the district; and several Italianate buildings, such as the Union Hall, the Masonic Hall, and the Brantzel's Building. <P3-S4>  Significant 20th-century additions to the district include Whiteside Park, home to a sculpture created by Lorado Taft; the White-Griswold Memorial Library, the city's public library; the Vitagraph Theater, which features a decorative terra cotta facade; and the Prairie School Chapin Building.