Each year, the U.S. Marshals Service averages 500-700 requests for historical or genealogical information. While we have approximately 40,000 names and references to personnel, there are names continually added to our official count.
This is due to the scattered source material available to document the enormous number of Posse Members, Guards, and Deputy U.S. Marshals over a 230-year period. For the ease of the researcher, we have compiled a "where to" list for primary sources of U.S. Marshals Service historical or genealogical material.