Certified by the Idaho Transportation Department as a Woman Owned, Disadvantaged Business Enterprise (DBE)

  • Architectural History

    Hallam Historical meets the Secretary of the Interior’s Standards for Architectural History. We conduct Section 106 historical surveys for federal agencies and prepare National Register and HABS/HAER/HALS documentation.

  • Historic Preservation

    We work with local governments and state historic preservation offices to conduct surveys, develop preservation plans, and prepare historic contexts and interpretive strategies that tell stories about places for diverse audiences.

  • Archival Research

    Hallam Historical has years of experience locating hard-to-find documents buried deep in the archives with no online trace. We conduct PRP searches and collect historical records for attorneys in support of civil litigation.

  • Family History

    Our family history practice goes beyond building family trees. We use maps, photographs, local histories, genealogical data and other sources to place your family’s story in historical context, adding the what, where, why, and how.

Linnéa Hallam, Ph.D.

Linnéa Hallam is a public historian who provides clients with expert historical research and analysis. She has consulted extensively with the U.S. National Park Service, authoring histories of Southwestern National Monuments, Casa Grande Ruins, and the National Trails program. As a scholar Linnéa writes about European and American encounters with Ancestral Puebloan sites in the Southwest and teaches a graduate course in Heritage Tourism. She meets the Secretary of the Interior’s Professional Qualifications Standards for History and Architectural History.

Ph.D., History, Arizona State University

M.A, History, Arizona State University

B.A., International Studies, University of Arizona

Nathan Hallam, Ph.D.

Nathan Hallam is an architectural historian who helps federal agencies meet historic preservation responsibilities under Section 106 of the National Historic Preservation Act. He has identified, evaluated, and recorded numerous historic properties in western states. He has also completed National Register nominations, interpretive signs, and narrative histories as adverse effect mitigation under Section 106. Nathan meets the Secretary of the Interior’s Professional Qualifications Standards for History and Architectural History. As a scholar he writes about the Sacramento and Phoenix metropolitan areas and teaches undergraduate and graduate courses in U.S. History, Public History, Historic Preservation, Urban History, California History, and the U.S. West.

Ph.D., History, Arizona State University

M.A, Public History, California State University, Sacramento

B.A., History, Sonoma State University