Industrial building

Lancaster Watch Company (Lancaster County, Pennsylvania)
Lander's Wagon and Carriage Shop (Allen County, Kansas)
Landis Shoe Company Building (Lebanon County, Pennsylvania)
Larkin--Belber Building (Philadelphia County, Pennsylvania)
Larkmead Winery (Napa County, California)
Las Dos Naciones Cigar Factory (Santa Cruz County, Arizona)
Lawrence and Chapin Building (Kalamazoo County, Michigan)
Lawson Airplane Company--Continental Faience and Tile Company (Milwaukee County, Wisconsin)
Lost Industrial Building
Lee Tire and Rubber Company (Montgomery County, Pennsylvania)
Lee Woodard and Sons Building (Shiawassee County, Michigan)
Leeds Iron Foundry (Orleans Parish, Louisiana)
Life Savers Building (Westchester County, New York)
Liggett and Myers Tobacco Company (Cabell County, West Virginia)
Lilly Biological Laboratories (Hancock County, Indiana)
Linde Air Products Factory (Erie County, New York)
Lindsay--Bostrom Building (Milwaukee County, Wisconsin)
Lion Brothers Company Building (Baltimore, Maryland)
Liquid Carbonic Company Building (Jackson County, Missouri)
Lisbon Winery (Napa County, California)
Lock Ridge Furnance Complex (Lehigh County, Pennsylvania)
Partially restored ruins of the Lock Ridge furnaces, now a park and museum.
Loewenstein and Sons Hardware Building (Kanawha County, West Virginia)
Lonaconing Silk Mill (Allegany County, Maryland)
Last intact silk mill in America
Long and Third Commercial Building (Franklin County, Ohio)
Lookout Mountain Hero (Estill County, Kentucky)
Lord and Burnham Building (Westchester County, New York)
Loth, Joseph, Company Building (Fairfield County, Connecticut)
Louden Machinery Company (Jefferson County, Iowa)
Louttit Laundry (Providence County, Rhode Island)
damaged by fire in 2001, and demolished in 2008
Lowell's Boat Shop (Essex County, Massachusetts)
Lowney Chocolate Factory (Bristol County, Massachusetts)
Lynn Realty Company Building No. 2 (Essex County, Massachusetts)
Lynnville Mill and Dam (Jasper County, Iowa)
M.M. Rhodes and Sons Co. (Bristol County, Massachusetts)
Madison Brass Works (Dane County, Wisconsin)
Madison Candy Company (Dane County, Wisconsin)
Former factory serving as restaurants and office space
Marathon Motor Works (Davidson County, Tennessee)
Automobile manufacturing facility until 1914, now a popular retail facility
Martin Shaughnessy Building (St. Louis, Missouri)
Marugg Company (Grundy County, Tennessee)
Maryland White Lead Works (Baltimore, Maryland)
Matthews and Willard Factory (New Haven County, Connecticut)
Mauk & Hammer/Houghton Elevator (Genesee County, Michigan)
Mayer Boot and Shoe Company Building (Milwaukee County, Wisconsin)
Former industrial plant repurposed as an apartment and commercial building.
McCarthy-Blosser-Dillon Building (Hocking County, Ohio)
McCleery Calendar Factory (Washington County, Iowa)
McCord Brothers Blacksmith Shop (Baker County, Oregon)
Vernacular style blacksmith shop built in 1917
McIntosh Building (Hampden County, Massachusetts)
McKinney Cotton Compress Plant (Collin County, Texas)
McPhee and McGinnity Building (Denver County, Colorado)
McPhee and McGinnity Paint Factory (Denver County, Colorado)
Measuregraph Company Building (St. Louis, Missouri)
Mechanical Fabric Company (Providence County, Rhode Island)
Meeker Sugar Refinery (Rapides Parish, Louisiana)
Melges Bakery (Brown County, Minnesota)
Mengel Box Company (Jefferson County, Kentucky)
Menger Soap Works (Bexar County, Texas)
Mentholatum Company Building (Sedgwick County, Kansas)
Meriden Curtain Fixture Company Factory (New Haven County, Connecticut)
Merit Underwear Company (Berks County, Pennsylvania)
Merriam, M.H. and Company (Middlesex County, Massachusetts)
Metz Ice Plant (Pike County, Pennsylvania)
Michaels--Stern Building (Monroe County, New York)
Michigan Condensed Milk Factory (Isabella County, Michigan)
Middishade Clothing Factory (Philadelphia County, Pennsylvania)
Middletown Alms House (Middlesex County, Connecticut)
Midland Packing Company (Woodbury County, Iowa)
Midwest Equitable Meter Building (Tulsa County, Oklahoma)
Midwest Marble & Tile Building (Tulsa County, Oklahoma)
Milford Cotton and Woolen Manufacturing Company (Hillsborough County, New Hampshire)
Milleysack, J. B. Cigar Factory (Lancaster County, Pennsylvania)
Milltown India Rubber Company (Middlesex County, New Jersey)
Milton-Bradley Company (Hampden County, Massachusetts)
Milwaukee Paper Box Company (Milwaukee County, Wisconsin)
Minden Butter Manufacturing Company (Douglas County, Nevada)
Minden Flour Milling Company (Douglas County, Nevada)
Minnesota Milk Company Building (Ramsey County, Minnesota)
Minnesota Stoneware Company (Goodhue County, Minnesota)
Mirro Aluminum Company Plant No. 3 (Manitowoc County, Wisconsin)
Mission Brewery (San Diego County, California)
Mitchell Lewis Building (Racine County, Wisconsin)
Modern Tool Company (Erie County, Pennsylvania)
Moline, Milburn and Stoddard Company (Hennepin County, Minnesota)
Moloney Electric Company Building (St. Louis, Missouri)
Monarch Milling Company (Montgomery County, Kentucky)
Moore, Silas B., Gristmill (Essex County, New York)
Moquin's Bakery (Chittenden County, Vermont)
Moravian Pottery and Tile Works (Bucks County, Pennsylvania)
Moritz Bergstein Shoddy Mill and Warehouse (Washington County, Minnesota)
Mosiac Tile Factory (Muskingum County, Ohio)
Former Mosiac Tile Plant in Zanesville, Ohio
Mount Vernon Mill No. 1 (Baltimore, Maryland)
Mowers' Block (Essex County, Massachusetts)
Mueller Brewery (Seneca County, Ohio)
Mulford Building (Philadelphia County, Pennsylvania)
Municipal Asphalt Plant (New York County, New York)
Municipal Light Plant (Franklin County, Ohio)
Murphy Varnish Works (Essex County, New Jersey)
Mutual Ice Company Building (Jackson County, Missouri)
N & W Overall Company Building (Hinds County, Mississippi)
Nash Block (Douglas County, Nebraska)
Nathan Cooper Gristmill (Morris County, New Jersey)
National Biscuit Company Building (Harris County, Texas)
National Clothespin Factory (Washington County, Vermont)
National Foundry and Machine Company (Jefferson County, Kentucky)
National Musical String Company (Middlesex County, New Jersey)
National NuGrape Company (Fulton County, Georgia)
National Tobacco Work Branch Stemmery (Jefferson County, Kentucky)
National Tobacco Works (Jefferson County, Kentucky)
Nebel Knitting Mill, Former (Mecklenburg County, North Carolina)
Nelson's Greenbrier Distillery (Robertson County, Tennessee)
Nevada Brewery (Nevada County, California)
New Castle Leather Raw Stock Warehouse (New Castle County, Delaware)
New England Butt Company (Providence County, Rhode Island)
New England Confectionery Company Factory (Middlesex County, Massachusetts)
New Holland Machine Company (Lancaster County, Pennsylvania)
New Mexico-Arizona Wool Warehouse (Bernalillo County, New Mexico)
New Richmond Roller Mills Co. (St. Croix County, Wisconsin)
New Ringgold Gristmill (Schuylkill County, Pennsylvania)
Newport Steam Factory (Newport County, Rhode Island)
Nicholson File Company Mill Complex (Providence County, Rhode Island)
Nissly Swiss Chocolate Company (Lancaster County, Pennsylvania)
Nissly--Stauffer Tobacco Warehouses (Lancaster County, Pennsylvania)
Nogales Steam Laundry Building (Santa Cruz County, Arizona)
North Attleborough Gasholder House (Bristol County, Massachusetts)
North Coast Casket Company Building (Snohomish County, Washington)
Northampton Gas Works (Hampshire County, Massachusetts)
A Gasholder House used to store coal-gas for lighting
Northern Brewery (Washtenaw County, Michigan)
Northwest Fence and Wire Works (Multnomah County, Oregon)
Northwestern Knitting Company Factory (Hennepin County, Minnesota)
Nunn-Bush Shoe Company Factory (Milwaukee County, Wisconsin)
Former shoe factory repurposed to dwelling space and community center
O'Brien Electric Priming Company (St. Joseph County, Indiana)
O'Hara Waltham Dial Company (Middlesex County, Massachusetts)
O.M. Edwards Building (Onondaga County, New York)
Oak Knitting Company (Onondaga County, New York)
Ohio Lantern Company (Seneca County, Ohio)
Ohio Valley Clay Company (Jefferson County, Ohio)
Old Bag Factory (Elkhart County, Indiana)
Brick factory building and brick power house.
Old Brickyard Place (Claiborne County, Mississippi)
Old Colony Iron Works-Nesmasket Mills Complex (Bristol County, Massachusetts)
Old Mill at Montauk State Park (Dent County, Missouri)
Old Prentice Distillery (Anderson County, Kentucky)
Old Red Mill and Mill House (Chittenden County, Vermont)
Old Weir Stove Company (Bristol County, Massachusetts)
Olmsted-Hixon-Albion Block (Hampden County, Massachusetts)
Omaha Ford Motor Company Assembly Plant (Douglas County, Nebraska)
Ore Processing Mill and Dam (Clear Creek County, Colorado)
Oregon Cracker Company Building (Multnomah County, Oregon)
Oregon Mill Complex (Lancaster County, Pennsylvania)
Orient Manufacturing Company-Chadwick-Hoskins No. 3 (Mecklenburg County, North Carolina)
Orr Iron Company (Vanderburgh County, Indiana)
Orton Memorial Laboratory (Franklin County, Ohio)
Otis Company Mill No. 1 (Hampshire County, Massachusetts)
Otis Elevator Company Building (San Francisco County, California)
Owens-Brockway Glass Zanesville Plant (Muskingum County, Ohio)
Zanesville Location for Owens-Illinois' glass making empire
P.H. Hanes Knitting Company (Forsyth County, North Carolina)
Pabst Brewing Company Complex (Milwaukee County, Wisconsin)
Campus of former Pabst Brewery, now redeveloping into a hip and trendy neighborhood
Pacific Coast Biscuit Company Building (Multnomah County, Oregon)
Packard Motor Corporation Building (Philadelphia County, Pennsylvania)
Pacolet Mills Cloth Room and Warehouse (Spartanburg County, South Carolina)
Historic textile mill building in Pacolet, SC
PAD Factory, The (Essex County, New York)
Palm Beach Daily News Building (Palm Beach County, Florida)
Palmetto Compress and Warehouse Company Building (Richland County, South Carolina)
Pamplin Pipe Factory (Appomattox County, Virginia)
Paramount Knitting Company Mill (Dodge County, Wisconsin)
Industrial building, once powered by the Beaver Dam River, converted to apartments
Parkin Ice Cream Company (Wood County, Wisconsin)
Former ice cream factory repurposed as a restaurant/brew pub.
Parks-Cramer Company Complex, Former (Mecklenburg County, North Carolina)