| Business | Founded | Contacts |
|---|---|---|
| United States Department of Justice | 1787 | 36 |
| Wells Fargo Bank | 1852 | 5 |
| NAM online | 1895 | 5 |
| American Lung Assn | 1904 | 32 |
| US Customs Service | 1927 | 5 |
| US Commission On Civil Rights | 1957 | 7 |
| Council of the Great City Schools | 1961 | 35 |
| Celanese Corporation | 1964 | 2 |
| FedEx Office Print & Ship Center | 1970 | 7 |
| Justice Management Division | 1974 | 6 |
| The Federal Mine Safety and Health Review Commission | 1977 | 8 |
| Fed Mine Safety & Health Rev Commision | 1979 | 1 |
| Jacqueline R. Bulluck | 1980 | 1 |
| Quiznos | 1981 | 1 |
| Federal Mine Safety & Health Review Commission | 1982 | 1 |
| Marriott Hotels and Resorts | 1982 | 10 |
| Bruce Hoffman, DDS | 1983 | 3 |
| A Slice of Italy Pizzeria | 1984 | 4 |
| CSX | 1984 | 10 |
| JW Marriott Washington, DC | 1984 | 50 |
| Alj | 1985 | 1 |
| Manufactured Housing Association | 1985 | 2 |
| Federl Mine Safety & Health Review Commission | 1987 | 1 |
| NBC | 1987 | 3 |
| Economist of London Editorial Bureau | 1989 | 3 |
| National Fair Housing Alliance | 1989 | 46 |
| U.S. Department of Justice | 1990 | 1 |
| Federal Mine Safety & Health Rev. Comm. | 1991 | 1 |
| Jerry's Subs and Pizza | 1991 | 3 |
| National Foundation-Unemplymnt | 1991 | 2 |
| New Haven Register | 1991 | 2 |
| States News Service | 1991 | 5 |
| DHS | 1992 | 2 |
| The Frankfurter Factory | 1992 | 1 |
| Capitol Print Center Inc | 1993 | 3 |
| Design-Build Institute of America | 1993 | 86 |
| Federal Mine Safety and Health Review Commission (FMSHRC) | 1993 | 3 |
| Dawn Dekeyser Dollar | 1995 | 1 |
| NFF Inc | 1996 | 40 |
| Networking For Future Inc | 1996 | 8 |
| PPL Corporation | 1996 | 2 |
| Host Hotels & Resorts, L.P. | 1998 | 15 |
| Linda H. Wiles | 1998 | 1 |
| Gas Research Institute | 1999 | 1 |
| Stratecon | 1999 | 1 |
| Mott MacDonald | 2001 | 2 |
| Organizational Strategies Inc | 2001 | 3 |
| Boston Scientific Corporation | 2002 | 30 |
| Avue | 2003 | 2 |
| Consolidated Executive Office | 2003 | 2 |
| Property Mngmnt-Motor Vehicles | 2003 | 3 |
| Buchman Law Firm LLP | 2004 | 20 |
| Teco Energy Inc | 2004 | 269 |
| Political Americana | - | 2 |
| Verizon Wireless | - | - |
| Moe's Southwest Grill | 2006 | 2 |
| Naan & Beyond | 2007 | 3 |
| Caci International | 2008 | 1 |
| Capital Image | - | 1 |
| Federal Mine Safety and Health Review Commission | 2008 | 1 |
| Ingenuity Management, Inc. | 2008 | 2 |
| The Palladium Group | 2008 | 1 |
| Esprinto | 2010 | 1 |
| Federal Mine Safety & Health Review Commission | 2010 | 5 |
| Five Guys | 2010 | 3 |
| Futures Group Global Outreach, Inc. | 2010 | 1 |
| London Daily Telegraph | - | 3 |
| Hewlett-Packard | - | 14226 |
| Inter-American Foundation | 2012 | 48 |
| PNC Financial Services Group Inc | - | 1 |
| Pnc Investments | - | 1 |
| UWC | - | 5 |
| 1331 Bar & Lounge | - | 1 |
| Marr JW AV | 2013 | 1 |
| Smak | 2013 | 1 |
| Telegraph Group Ltd. | - | 1 |
| Management & Planning Staff | - | - |
| NAM online | 1895 | 1 |
| National Industrial Council of America | 1902 | - |
| Tishman Construction Corporation | 1973 | - |
| Electronic Data Systems Corp | 1980 | 3 |
| Quikpark Inc | 1984 | - |
| B Dalton Bookseller | 1985 | 1 |
| Buchman & O'Brien | 1985 | 2 |
| National Association of Manufa | 1985 | 12 |
| Washington Massage Center | 1987 | 2 |
| Papillon Ties & Accessories Shops | 1992 | 2 |
| Perfumania | 1992 | 1 |
| Eds Office Government Affrs | 1994 | - |
| Nash's Sports Center | 1995 | 1 |
| Elegancy | 1999 | 1 |
| Great American Shoppe | 1999 | 1 |
| Manufacturing Institute | 1999 | 1 |
| Alliance/Worker Retrmnt Scurty | 2000 | 2 |
| Csc | 2002 | - |
| European-American Bus Council | 2003 | 1 |
| Shops At National Place | 2003 | - |
| Kabuki | 2004 | - |
| The Morning Call Inc | 2004 | 1 |
| Allright Parking Washington Inc | - | - |
| Computer Sciences Corporation | - | - |
| Dennis Dean Kirk Esq Attorney | - | - |
| EDS | - | 3 |
| Freeman Decorating | 2005 | - |
| Glenn James T Lawyer | - | - |
| Holroyd- L J Attorney | - | - |
| Maloy Richard J Correspondent | - | - |
| Marriott JW Hotel on Pennsylvania Avenue | - | - |
| Mcgrath- Joseph B Lawyer | - | - |
| Meiwah Express | 2005 | 1 |
| Pennsylvania Avenue Development Corporation - Development | - | - |
| Reeston Richard Newspaper Correspondent | - | - |
| St Louis Globe Democrat | - | - |
| United States Government - Pennsylvania Avenue Development | - | - |
| National Assoc Of Mfrs | - | - |
| Amazon Cafe | 2007 | - |
| Naan And Beyond | 2007 | 1 |
| Compete America | - | - |
| Cosmetic & Implant Dental Ctr | - | - |
| Fire & Ice | - | 1 |
| Hunan Express Inc | - | 1 |
| NAM Site Selection Network | - | - |
| Quadrangle Development Sq 254 Limited Partnership | 2009 | - |
| America's Business with Mike Hambrick | - | 1 |
| Eds-Tps | 2010 | - |
| Just in Time | - | 1 |
| Law Facilities | 2010 | - |
| Manufacturing Leadership | - | - |
| Transworld Services of Am | - | - |
| United States Government | - | - |
| Well Being Massage & Spa | - | - |
| AIDS Treatment Update | - | 1 |
| DMAA: The Care Continuu. | - | 1 |
| Employers Association | - | 1 |
| Financial Industry Regu. | - | 1 |
| Objective Systems Integrators | - | 2 |
| Riverbay Corporation | - | 1 |
| Sunday Telegraph of London | - | - |
| The Economist | - | 4 |
| Abdnor Leanne | - | - |
| Allied International Corporation | - | 1 |
| August Max Woman | - | - |
| Avenue Grill | - | 3 |
| GTE Government Systems Corporation | - | - |
| Larry Cookies | - | - |
| Teleglobe International | - | 1 |
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