Southampton, England
By The Library of Congress - [The pier, Southampton, England] (LOC), No restrictions, https://commons.wikimedia.org/w/index.php?curid=36604825
New York City, New York
Sam's view of New York City, 1853:
Washington D.C.
Sam Clemens' first visit was in February of 1854. He returned again in 1867.
November 24 & 25, 1884: Twain and Cable stayed in Washington D.C. the nights of the 24th and 25th, leaving for Philadelphia the morning of the 26th.
February 28, 1885
New Orleans, LA
From 1868, elections in Louisiana were marked by violence, as white insurgents tried to suppress black voting and disrupt Republican Party gatherings. The disputed 1872 gubernatorial election resulted in conflicts that ran for years.
Cincinnati, Ohio
Sam Clemens arrived in Cincinnati from Keokuk, Iowa in October of 1856. He worked as a printer for T. Wrightson & Co. at 167 Walnut St. He stayed at a boardinghouse at 76 Walnut St. He wrote two letters to the Keokuk Post using the name Thomas Jefferson Snodgrass. On February 16, 1857, he boarded the Paul Jones and left the city for New Orleans, where he became Bixby's cub.
He returned to the city as part of the Twain-Cable Tour, January 1885.
St. Louis, MO
Saint Louis, Missouri was well known to Samuel Clemens.
According to Rasmussen, while working as a river boat pilot "he landed at St. Louis perhaps 60 times."
St Louis was Sam's destination when he first left home in Hannibal, arriving May 27, 1853. He was 17 1/2 years old and aiming for New York City.
Sam returned to St. Louis in 1854. He contributed a letter to the Muscatine Tri-Weekly Journal, 16 Feb 1855 that remarked on efforts to enlarge the size of St. Louis as well as railroad developments.