Author/Creator
- United States. Bureau of the Census705
- United States641
- United States. Federal Aviation Administration269
- United States. Social Security Administration214
- United States. Bureau of Labor Statistics211
- United States. Internal Revenue Service209
- United States. Department of the Army182
- National Center for Health Statistics (U.S.)175
- Library of Congress. Copyright Office156
- United States. Forest Service153
- United States. General Accounting Office141
- United States. Social Security Administration. Office of Policy137
- United States. Small Business Administration91
- U.S. Customs Service84
- National Institutes of Health (U.S.)80
- United States. National Highway Traffic Safety Administration69
- National Cancer Institute (U.S.)60
- United States. Occupational Safety and Health Administration60
- United States. Bureau of the Census. Geography Division59
- United States. Environmental Protection Agency55