| Community College of Baltimore County |
6,138 |
| Montgomery County Public Schools |
3,565 |
| Towson University |
2,988 |
| Cecil County Public Schools |
2,294 |
| Montgomery College |
2,093 |
| State of West Virginia Department of Education |
1,973 |
| Rockingham County Public Schools |
1,667 |
| Anne Arundel Community College |
1,480 |
| Otis Elevator Company |
1,233 |
| Frederick County Public Schools |
989 |
| Baltimore City Community College |
910 |
| Bowie State University |
903 |
| Patton Boggs LLP |
886 |
| staffordschools |
879 |
| Frostburg State University |
826 |
| Arnold & Porter LLP |
810 |
| Howrey LLP |
765 |
| Vancouver School District |
725 |
| University of Mary Washington |
716 |
| USDA Animal and Plant Health inspection Service |
675 |
| Virginia Military Institute |
634 |
| Charles County Public Schools |
605 |
| Inova Health System |
592 |
| Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. |
561 |
| Arent Fox LLP |
541 |
| Coldwell Banker - MD |
538 |
| Sinclair Broadcast Group, Inc. |
535 |
| Charles County Government - La Plata, MARYLAND |
515 |
| County of Fairfax, Virginia |
509 |
| The Baltimore Sun |
502 |
| Crowell & Moring LLP |
501 |
| Howard Community College |
498 |
| Maryland Department of Health and Mental Hygiene |
497 |
| Dept. of Commerce Bureau of Economic Analysis |
490 |
| United States Bureau of ATF |
461 |
| Defense Advanced Research Projects Agency (DARPA) |
443 |
| Columbia Union College |
409 |
| Mountain State University |
387 |
| Fairmont State University |
370 |
| Maryland MVA |
370 |
| Health Resources and Services Administration |
369 |
| West Virginia State University |
366 |
| Manassas City Public Schools |
354 |
| Maryland School for the Deaf |
352 |
| Chadbourne & Parke LLP |
346 |
| Frederick County Govt |
345 |
| National Labor Relations Board |
340 |
| Hanley Wood, LLC |
336 |
| National Academy of Science |
335 |
| International Monetary Fund |
332 |
| Hagerstown Community College |
331 |
| Shepherd University |
327 |
| Chevy Chase Bank, F.S.B. |
322 |
| Frederick Community College |
322 |
| ENVIRON Holdings, Inc. |
316 |
| CitiFinancial |
300 |
| Meade Realty |
296 |
| U.S. Government Printing Office (GPO) |
280 |
| Wiley Rein LLP |
270 |
| Harford Community College |
263 |
| Williams & Connolly |
262 |
| American Institutes for Research |
259 |
| Maryland Department of Housing and Commu |
259 |
| Montgomery County Deptartment of Transportation - Transit Services |
253 |
| Saudi Arabia Cultural Mission |
251 |
| Friedman, Billings, Ramsey Group, Inc. |
250 |
| United Way of America |
249 |
| Prince William County School Board Public Schools |
245 |
| Joint Staff - JSIRMO |
243 |
| Dewberry-Goodkind, Inc |
241 |
| Clark Construction Group, LLC |
240 |
| McAfee Inc |
235 |
| State of West Virginia, Department of Health and Human Resources |
229 |
| Baltimore Washington International Airport |
227 |
| American Diabetes Association |
225 |
| Federal Energy Regulatory Commission |
224 |
| Hydro Aluminum North America |
224 |
| Center for Educational Technologies |
222 |
| Radio One, Inc. |
215 |
| Reznick Group, P.C. |
213 |
| Hanger Orthopedic Group, Inc. |
213 |
| Inter Net Global LLC |
213 |
| New River Community College |
212 |
| City of Fairfax VA |
210 |
| Congressional Quarterly Inc. |
206 |
| Adventist HealthCare, Inc. |
205 |
| Arlington Public Schools |
201 |
| Prince George's County, Maryland |
200 |
| Southern West Virginia Community and Technical College |
197 |
| Prince William County, Virginia |
192 |
| Washington Times |
188 |
| Concord College |
188 |
| National Journal Group Inc. |
188 |
| Perkins+Will |
188 |
| Ober, Kaler, Grimes & Shriver |
176 |
| Bluefield State College |
176 |
| Nortel Government Solutions |
172 |
| Bon Secours Health System |
168 |
| Arlington County |
166 |
| Calvert County Public Schools |
166 |
| Holy Cross Hospital |
165 |
| Pension Benefit Guaranty Corporation |
165 |
| National Audubon Society, Inc. |
164 |
| American Psychological Association |
164 |
| District of Columbia Public Schools |
164 |
| Carruthers Relocation Services |
163 |
| National Endowment for the Arts |
162 |
| Allegis Group, Inc. |
162 |
| Colliers Pinkard |
161 |
| American Chemistry Council |
160 |
| National Security Agency/Central Security Service |
157 |
| Maryland Department of Natural Resources |
156 |
| NCI Information Systems, Inc. |
154 |
| Maryland State Department of Education |
154 |
| Steptoe & Johnson PLLC |
153 |
| YWCA of the U.S.A. |
153 |
| West Virginia University Robert C. Byrd Health Sciences Center |
153 |
| Charleston Area Medical Center |
152 |
| Oblon, Spivak, McClelland, Maier |
152 |
| Project Performance Corporation |
151 |
| Bridgemont Community and Technical College |
150 |
| Ross, Dixon |
149 |
| Arcom Publishing Inc |
148 |
| Austrade |
148 |
| American Psychiatric Association |
148 |
| Trinity University - Washington, DC |
147 |
| General Physics Corporation |
147 |
| Giant Food LLC |
147 |
| United Church of Christ |
146 |
| Goodman |
146 |
| State of Maryland Department of Housing |
145 |
| Logistics Management Institute |
144 |
| Town of Blacksburg, Virginia |
142 |
| Wor-Wic Community College |
141 |
| Cassidy |
140 |
| Post Newsweek Tech Media Group |
140 |
| National Association for the Education of Young ChILDREN |
140 |
| ICMA Retirement Corporation |
139 |
| Clarke County Public Schools |
137 |
| Army Times Publishing Co |
136 |
| Cystic Fibrosis Foundation |
136 |
| Montgomery County's (Maryland) school |
135 |
| Maryland Department of Agriculture |
132 |
| National Recreation and Park Association |
129 |
| Davis and Elkins College |
128 |
| Beers and Cutler PLLC |
128 |
| American Society of Health-System Pharmacists |
128 |
| Bowles Rice McDavid Graff |
127 |
| United BioSource Corp |
126 |
| Southern Maryland Hospital |
125 |
| Brown Investment Advisory |
125 |
| Keller and Heckman LLP |
125 |
| Maryland Transit Administration |
125 |
| National Institute of Neurological Disorders and Stroke |
125 |
| Spotsylvania County Schools |
124 |
| Legal Services Corporation |
124 |
| Alderson Broaddus College |
123 |
| Center for Applied Linguistics |
123 |
| Cabell Huntington Hospital |
123 |
| Harford County Public Schools |
122 |
| Alexandria City Public Schools |
122 |
| STG, Inc. |
122 |
| United States Institute of Peace |
119 |
| Voice Of America |
119 |
| Dorchester County Board Of Education |
119 |
| U.S. News |
118 |
| Council for Advancement & Support of Education |
118 |
| Emergency Medicine Associates |
118 |
| Washington National Cathedral |
116 |
| iDirect Inc |
116 |
| Access Intelligence, LLC |
115 |
| Queen Anne's County Board of Education |
115 |
| National Defense Industrial Association |
114 |
| ADL-Co Labs |
113 |
| QuadraMed Corporation |
113 |
| Windels Marx Lane & Mittendorf, LLP |
112 |
| American Farm Bureau |
112 |
| Potomac News |
112 |
| AOUSC |
112 |
| Institute for Defense Analyses |
111 |
| Headstrong Corporation |
110 |
| Visiting Nurse Associations of America |
110 |
| Free Lance-Star Publishing Co |
110 |
| US Consumer Product Safety Commission |
110 |
| National Electrical Manufacturers Association |
110 |
| Chronicle of Higher Education |
109 |
| Beveridge & Diamond, P.C. |
109 |
| Peninsula Regional Medical Center |
108 |
| ISP Sports |
107 |
| Associated Builders and Contractors, Inc |
107 |
| Zuckerman Spaeder LLP |
106 |
| MD Environmental Service |
106 |
| American Institute of Aeronautics and Astronautics, Inc |
106 |
| Greater Washington Educational Telecommunication Association |
105 |
| Greenhorne & O'Mara, Inc. |
104 |
| Spacenet Inc. |
104 |
| First Mariner Bancorp |
103 |
| Ohio Valley University |
103 |
| Kennan Institute Library |
103 |
| GIA (Gemological Institute of America) |
102 |
