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| U. S. Department US Department of Labor | L123 |
| U S Dept of Labor | L123 |
| U.S. Dept of Labor | L123 |
| U. S. Dept of Labor | L123 |
| U.S. Federal Interagency Committee on Migrant Labor. | L123 |
| U. S. of Labor | L123 |
| Uiri Labor | L123 |
| Unit Committee on Education and Labor | L123 |
| United States. Army. Department of the Gulf (1862-1865). Bureau of Free Labor | L123 |
| United States. Army. Department of the Gulf. Bureau of Free Labor | L123 |
| United States. Army. Dept. of the Gulf (1862-1865). Bureau of Free Labor. | L123 |
| United States. Bureau of Labor | L123 |
| United States Bureau of Labor | L123 |
| United States. Bureau Of Labor | L123 |
| United States. Bureau of Labor. | L123 |
| United States. Bureau of Foreign and Domestic Commerce (Dept. of Commerce and Labor) | L123 |
| United States. Bureau of Labor Statistics. United States. Department of Labor | L123 |
| United States. Bureau of manufactures (Dept. of commerce & labor) | L123 |
| United States. Bureau of Manufactures (Dept. of Commerce and Labor) | L123 |
| United States. Bureau of manufactures (Dept. of commerce and labor) | L123 |
| United States. Bureau of Manufactures. Dept. of Commerce and Labor. | L123 |
| United States. Bureau of Statistics. Dept. of Commerce and Labor | L123 |
| United States. Bureau of the Census. Department of commerce and labor. | L123 |
| United States. Commissioner of Labor. | L123 |
| United States. Congress. Committee on Labor and Public Welfare. Subcommittee on Labor. | L123 |
| United States. Congress. House. Committee on labor | L123 |
| United States. Congress. House. Committee on Labor | L123 |
| United States. Congress. House. Committee on Agriculture. Subcommittee on Farm Labor. | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |
| United States. Congress. House. Committee on Education and Labor | L123 |