The listed city for this entry is Montgomery, PA, which appears to be an administrative quirk — the Allenwood Federal Correctional Complex is actually located near White Deer and Allenwood in Union County, Pennsylvania, about 75 miles north of Harrisburg. Its roots go back to 1952, when the Bureau of Prisons opened a minimum-security camp on the site of a former World War II prisoner-of-war camp. That original camp became known during the Watergate era, when several convicted figures from the scandal, including Egil Krogh and James McCord, served time there. The Bureau expanded the property into a full three-institution complex in the early 1990s, adding a low-security prison and a medium-security prison in 1992 and a high-security penitentiary in 1993, all sharing one administrative structure. Combined, the complex now holds close to 3,000 male inmates across its three security levels, making it one of the larger federal prison complexes in the country. Because "Allenwood" refers to three distinct institutions on one campus, families should confirm exactly which unit — low, medium, or the penitentiary — their loved one is assigned to, since mail, visiting, and rules differ between them.