North Main Street Historic District (Hannibal, Missouri)

Mark Twain Historic District is a national historic district located at Hannibal, Marion County, Missouri. The district encompasses 20 contributing buildings in the central business district of Hannibal. It developed between about 1840 and 1936. Located in the district is the separately listed Mark Twain Boyhood Home. Other notable buildings include the Ice House Theatre (c. 1885), Randall House Antiques (c. 1845), Information Center (c. 1845), House of the Pilasters & Grant's Drug Store (1839-1844), "Becky Thatcher" House (c. 1840s), and the Mark Twain Memorial Lighthouse (1936). It was listed on the National Register of Historic Places in 1978.

Standard Printing Company, also known as the Hayward Grocery Company, is a historic commercial building located at Hannibal, Marion County, Missouri. It was built in 1879, and is a three-story, nine bay by ten bay, Italianate style brick structure. It features segmental arched windows, a lavish bracketed and modillioned cornice, and a storefront with intact cornice and iron pilasters.: 38–39  It was added to the National Register of Historic Places in 1986.

Broadway District is a national historic district located at Hannibal, Marion County, Missouri. The district encompasses 28 contributing buildings in the central business district of Hannibal. It developed between about 1866 and 1934, and includes representative examples of Italianate, Classical Revival, and Art Deco architecture. Notable buildings include the Lakenan Building (c. 1866), Kresge Building (1931), Second Farmers and Merchants Bank (c. 1910), Sproul-Cash Store (1901), Hannibal Trust Company (1909-1910), Hickman Block (c. 1865), and Robinson Brothers (c. 1894).: 18–27  It was listed on the National Register of Historic Places in 1986.

Benjamin Horr House, also known as the Standard Printing Company, is a historic home located at Hannibal, Marion County, Missouri. It was built about 1855, and is a two-story, vernacular Greek Revival style brick structure. It has a front gable roof with cornice. It is the earliest surviving building to have been used for education in Hannibal, having once housed a private school run by the family of one of Mark Twain's former schoolteachers.: 40–41  It was added to the National Register of Historic Places in 1986.

The Mark Twain Boyhood Home & Museum is located on 206-208 Hill Street, Hannibal, Missouri, on the west bank of the Mississippi River in the United States. It was the home of Samuel Langhorne Clemens, better known as author Mark Twain, from 1844 to 1853. Clemens found the inspiration for many of his stories, including the white picket fence, while living here. It has been open to the public as a museum since 1912, and was designated a National Historic Landmark on December 29, 1962. It is located in the Mark Twain Historic District.

Hock Building, also known as Standard Printing Company, Warehouse No. 8, is a historic commercial building located at Hannibal in Marion County, Missouri. It was built in 1872, and is a three-story brick structure, three bays wide and eight deep. It features arched windows with thick cast-iron moldings above and iron pilasters at the first floor storefront.: 42–43  It was added to the National Register of Historic Places in 1986.

Davidson Building was a historic commercial building located at Hannibal, Marion County, Missouri. It was built between 1903 and 1905, and was a two-story Romanesque Revival style building. It had a three-bay rock-faced ashlar facade and party walls. It featured arched windows with radiating voussoirs.: 44–45  It has been demolished. It was added to the National Register of Historic Places in 1986.

Mark Twain Hotel is a historic hotel building located at Hannibal, Marion County, Missouri. It was designed by Barnett, Haynes & Barnett and built in 1905. It is a four-story, Renaissance Revival style steel-frame structure with a granite foundation and beige pressed-brick exterior. The annex was built in 1918. It features semicircular arches over the main door and adjacent windows.: 50–51  It was then added to the National Register of Historic Places in 1986.

Holmes–Dakin Building is a historic commercial building located at Hannibal, Marion County, Missouri. It was built in 1894, and is a two-story brick structure with a coursed rubble foundation and a flat roof. It features a corbelled brick frieze with matching corbelled parapet, capped by a stone molding. It originally housed a cigar factory.: 46–47  It was added to the National Register of Historic Places in 1986.

Robert Elliott's Wholesale Grocery is a historic commercial building located at Hannibal, Marion County, Missouri. It was built about 1886, and is a two-story brick structure. It features semicircular arches with fanlight tops on the first floor, upper windows with segmental arches, and an applied cornice, possibly metal.: 58–59  It was added to the National Register of Historic Places in 1986.

Green Double House is a historic duplex home located at Hannibal, Marion County, Missouri. It was built in 1857–1858, and was a one-story, "raised cottage" or the "double gallery" clapboard structure on a completely exposed squared rubble basement. The house was divided into two residences.: 56–57  It has been demolished. It was added to the National Register of Historic Places in 1986.

The buildings at 207–209 South Main St. are two historic commercial buildings located at Hannibal, Marion County, Missouri. They were built about 1860 and are two two-bay, two-story brick storefront buildings. They have high transom or fascia areas and segmental arched windows on the second story.: 52–53  It was added to the National Register of Historic Places in 1986.