HANNIBAL, a city of Marion county, Mo., U.S.A., on the Mississippi river, r 2om. above Saint Louis. It is on Federal high ways 36 and 61, and is served by the Burlington, the St. Louis and Hannibal and the Wabash railways, and by river steamers and barges. The population was 19,306 in (9.3% negroes), and was 22,761 in 193o by the Federal census. Behind the low, level business section of the city rise picturesque bluffs and hills to a height of 2ooft. above the river, on which are most of the resi dences. Riverview park (2ooac.) affords magnificent views of the Mississippi valley. The Burlington has large repair shops here, and there are numerous and varied factories, with an output in 1925 valued at $15,852,479. Mark Twain spent his boyhood in Hannibal, which provided the setting of his Life on the Mississippi, Huckleberry Finn, and Tom Sawyer. His home at 316 Hill street, a two-story frame house built by his father John Marshall Clem ens in 1844, is maintained by the city as a memorial. A statue of him stands on an eminence in Riverview park, looking out over the river, and there is one of Huck Finn and Tom Sawyer at the foot of Cardiff hill. The cave described in Tom Sawyer, 2m. S. of the city, extending south-eastwardly to the Salt river, 9m. away, was used as a hiding-place for slaves escaping by the "Underground Railway," and twice was a refuge for Jesse James. The site of Hannibal was part of old Spanish grants, and this gave rise to much litigation in the early days. The name Hannibal was given by a Spanish surveyor to the small stream (now called Bear creek) which empties into the Mississippi at this point, and was trans ferred to the settlement. The first settler, Moses D. Bates, ar rived in 1818. The town was laid out in 1819 and chartered as a city in 1839.