Merchants and Manufacturers Building

The One Main Building, formerly the Merchants and Manufacturers Building (commonly referred to as the M&M Building), is a building on the campus of the University of Houston–Downtown. The building is recognized as part of the National Register of Historic Places, is a Recorded Texas Historic Landmark, and considered a Contributing Building in Downtown Houston's Main Street/Market Square Historic District.^[1] The building was built above Allen's Landing—an area where Houston's founders John Kirby Allen and Augustus Chapman Allen originally settled.

The Merchants and Manufacturers Building was built in 1930 and was the largest building in the city at the time.^[2] Although the commerce-focused building featured 14 miles of floor space and could accommodate one-third of the city's population, the Great Depression in the United States stifled initial participation. The building was purchased by South Texas Junior College in the 1960s, which became the University of Houston–Downtown College in 1974.

The building remains as a largest facility of the University of Houston–Downtown and was given an official designation as "One Main Building," or simply the "Main Building," by the university.

References

University of Houston–Downtown
Academics	Colleges Business Humanities and Social Sciences Public Service Sciences and Technology Programs University College
Campus	One Main Building (M&M Building) Academic Building Jesse H. Jones Student Life Center Commerce Street Building Willow Street Pump Station Shea Street Building Allen's Landing Main Street/Market Square Historic District UH–Downtown Station (METRORail)
Student life	The Dateline Downtown Student Government Association

National Register of Historic Places in Texas
Lists by county	Anderson Andrews Angelina Aransas Archer Armstrong Atascosa Austin Bailey Bandera Bastrop Baylor Bee Bell Bexar Blanco Borden Bosque Bowie Brazoria Brazos Brewster Briscoe Brooks Brown Burleson Burnet Caldwell Calhoun Callahan Cameron Camp Carson Cass Castro Chambers Cherokee Childress Clay Cochran Coke Coleman Collin Collingsworth Colorado Comal Comanche Concho Cooke Coryell Cottle Crane Crockett Crosby Culberson Dallam Dallas Dawson Deaf Smith Delta Denton DeWitt Dickens Dimmit Donley Duval Eastland Ector Edwards El Paso Ellis Erath Falls Fannin Fayette Fisher Floyd Foard Fort Bend Franklin Freestone Frio Gaines Galveston Garza Gillespie Glasscock Goliad Gonzales Gray Grayson Gregg Grimes Guadalupe Hale Hall Hamilton Hansford Hardeman Hardin Harris Harrison Haskell Hartley Hays Hemphill Henderson Hidalgo Hill Hockley Hood Hopkins Houston Howard Hudspeth Hunt Hutchinson Irion Jack Jackson Jasper Jeff Davis Jefferson Jim Hogg Jim Wells Johnson Jones Karnes Kaufman Kendall Kenedy Kent Kerr Kimble King Kinney Kleberg Knox La Salle Lamar Lamb Lampasas Lavaca Lee Leon Liberty Limestone Lipscomb Live Oak Llano Loving Lubbock Lynn Madison Marion Martin Mason Matagorda Maverick McCulloch McLennan McMullen Medina Menard Midland Milam Mills Mitchell Montague Montgomery Moore Morris Motley Nacogdoches Navarro Newton Nolan Nueces Ochiltree Oldham Orange Palo Pinto Panola Parker Parmer Pecos Polk Potter Presidio Rains Randall Reagan Real Red River Reeves Refugio Roberts Robertson Rockwall Runnels Rusk Sabine San Augustine San Jacinto San Patricio San Saba Schleicher Scurry Shackelford Shelby Sherman Smith Somervell Starr Stephens Sterling Stonewall Sutton Swisher Tarrant Taylor Terrell Terry Throckmorton Titus Tom Green Travis Trinity Tyler Upshur Upton Uvalde Val Verde Van Zandt Victoria Walker Waller Ward Washington Webb Wharton Wheeler Wichita Wilbarger Willacy Williamson Wilson Winkler Wise Wood Yoakum Young Zapata Zavala
National Parks	Big Bend National Park Guadalupe Mountains National Park
Other lists	Bridges National Historic Landmarks National Natural Landmarks Recorded Texas Historic Landmarks
Keeper of the Register History of the National Register of Historic Places Property types Historic district Contributing property

Coordinates: 29°45′49″N 95°21′37″W / 29.76362°N 95.36032°W / 29.76362; -95.36032