Jones & Laughlin Steel | Tulsa | OK |
Kaiser Aluminum & Chemical | Tulsa | OK |
Kaiser Aluminum & Chemical | Pryor | OK |
Kanawha Fittings | Tulsa | OK |
Kansas City Southern | Heavener | OK |
Katherine Boswell Memorial Chapel | Ada | OK |
Keener Oil & Gas | Dewey | OK |
Keener Oil & Gas | Bartlesville | OK |
Kennedy Building | Tulsa | OK |
Kentube | Tulsa | OK |
Kerr Glass Manufacturing | Sand Springs | OK |
Kerr McGee Chemical | Wynnewood | OK |
Kerr McGee Chemical | Cushing | OK |
Kerr McGee Oil Industries | Wynnewood | OK |
Keyes Field Helium Plant | Keyes | OK |
Lake Murray Lodge | Ardmore | OK |
L. A. King | Tulsa | OK |
Lobar Oil | Oklahoma City | OK |
Lone Star Industries | Marlow | OK |
Lone Star Pressure Precision | Tulsa | OK |
Lub Fab | Tulsa | OK |
Lucent Technologies | Oklahoma City | OK |
Magnolia Petroleum | Stonewall | OK |
Magnolia Petroleum | Healdton | OK |
Magnolia Pipe Line | Maud | OK |
Maloney Crawford Tank | Tulsa | OK |
Mark Blodgett Insulation | Oklahoma City | OK |
Martin Marietta Cement | Tulsa | OK |
Mayo Hotel | Tulsa | OK |
McAlester Army Ammunition Plant | McAlester | OK |
Mcclain High School | Tulsa | OK |
McClellan Store | Stillwater | OK |
McClellan Store | Clinton | OK |
McDonnell Douglas | Tulsa | OK |
Mercy Hospital | Oklahoma City | OK |
Michigan Wisconsin Pipe Line | Mooreland | OK |
Mid Continent Petroleum | Tulsa | OK |
Middle West Utilities | Tulsa | OK |
Midland Cooperative | Cushing | OK |
Midwestern Pipe Line Prod | Tulsa | OK |
Midwest Insulation & Material | Oklahoma City | OK |
Missouri, Kansas & Texas Railway | Muskogee | OK |
Mohawk Pumping Station | Tulsa | OK |
Moorlane Sutton Supply | Oklahoma City | OK |
Municipal Improvement Authority | Oklahoma City | OK |
Muskogee Gas & Electric | Muskogee | OK |
Muskogee General Hospital | Muskogee | OK |
Muskogee Generating Station | Muskogee | OK |
Muskogee High School | Muskogee | OK |
Muskogee Iron Works | Muskogee | OK |