Landis' work at Babcock and Wilcox involved him in a number of nuclear reactor projects both in the United States and abroad. The bulk of the collection is correspondence, memoranda, proposals, studies, and reports surrounding these projects.

Other papers relate to Landis' memberships on the Virginia Tech Board of Visitors (1966-1970); the Advisory Council of Virginia State Technical Services (1966-1969); the Virginia State Advisory Committee on Nuclear Energy (1956-1961); the Virginia State Chamber of Commerce (1954-1968); the Virginia Engineering Foundation of the University of Virginia (1962-1969); and the Virginia Advisory Board on Industrial Development (1962-1969).

In 2013, following Landis' death, an additional 4 boxes of materials were donated to Special Collections. Although not organized beyond the order in which they were received, these boxes generally contain photocopies of original materials: correspondence, reports, presentations and papers, articles by/about Landis, clippings, professional and personal writings, conference programs, notes, and teaching materials. A box-level inventory is at the bottom of the "Contents List" below.