For the National Park Service (NPS), HRA completed A Small Cave No More: An Administrative History of Jewel Cave National Monument, South Dakota. This detailed history tells the story of how the U.S. Forest Service and the National Park Service have managed Jewel Cave National Monument over the past 100 years.

HRA completed a 120-page “coffee table” book commemorating the centennial of the Associated General Contractors Oregon-Columbia Chapter.

For the U.S. Army Corps of Engineers, HRA prepared an illustrated history titled Building Strong in Korea: A History of the U.S. Army Corps of Engineers, Far East District. The manuscript covers the period 1957–2017 and traces the emergence of the Far East District following the Korean War and through numerous geopolitical changes, placed within the context of the Cold War and Korea’s own political and economic history.

HRA prepared a book-length, illustrated manuscript titled Managing a Land in Motion: An Administrative History of Point Reyes National Seashore, which the NPS published in 2007.

HRA prepared a comprehensive, updated history of the Portland District of the U.S. Army Corps of Engineers titled Engineering in the Twenty-First Century: A History of the Portland District of the U.S. Army Corps of Engineers, 2000–2015. The history examines the work of the District in the twenty-first century and covers such topics as environmental mitigation, maintenance of aging infrastructure and hydroelectric projects, navigation, and technological changes.

HRA historians researched and wrote a 200-page administrative history update of the US Army Corps of Engineers, Baltimore District, covering the years 1974 to 2008. The history explained the district’s transformation from its early focus on flood control and transportation improvement to its emerging environmental missions, such as ecosystem restoration and cleanup of formerly used defense sites.

On behalf of the U.S. Army Corps of Engineers, HRA is writing a history of Locks and Dams 52 and 53—the last of the Ohio River wicket dams.

In 2004, the U.S. Army Corps of Engineers selected HRA to research and write a history of water management in South Florida and the Everglades. In 2010, the Corps asked HRA to add an epilogue covering the recent implementation of the Central Everglades Restoration Plan. Publication of River of Interests: Water Management in South Florida and the Everglades, 1948–2010, occurred in 2011.

In 2006, the U.S. Army hired HRA to conduct oral history interviews, perform research, and write a book detailing the history of the Army’s momentous Residential Communities Initiative (RCI) Program. The Army tasked HRA with collecting and telling the story of the pioneering privatization program to improve quality of life for soldiers and their families. The interviews became source material for writing Privatizing Military Family Housing: A History of the U.S. Army’s Residential Communities Initiative, 1995–2010.