This series is comprised of materials related to real estate development work by Irwin Molasky with his company, the Molasky Group of Companies, in Las Vegas, Nevada. The papers include material on construction projects such as Turnberry Towers, Park Towers, and the Molasky Corporate Center, as well as project descriptions, development newsletters, magazine articles/newsclippings, and color photographic prints and transparencies of real estate projects from the 1950s and 1997 to 2012.

The Professional files series, 1893-1977, are comprised of Byrd's research interests, and contains topics specifically related to Western and Southern Nevada's history from primarily 1930-1970. The series includes speeches, interview transcripts from her 1930-1931 Tonopah and Goldfield research, journal articles, maps, photographs, correspondence, and newspaper articles and clippings.