Diaries, field notes, correspondence, and maps. Gorlinski worked primarily in Utah and many of the materials relate to his activities in and around Park City, Utah. He was also associated with projects in other places in Utah and in sites in Nevada, California, and Idaho. The diaries cover the years 1909 to 1955 when Gorlinski was living in Salt Lake City, Utah.

Correspondence, diaries, financial records, legal documents, irrigation and canal documents, pipeline descriptions, railroad advertisements, receipts, and notes. The materials relate largely to Hardy's work on railroads and other projects.

Collection includes correspondence, blueprints, surveys, reports, field notes, photographs, and other materials from 1886 to 1932 relating chiefly to the engineering and legal aspects of engineering in Utah in the areas of private irrigation and mining activities. Also included are records of several associations of water users in Utah.