The Lawrence S. Heberle Papers consist of photocopied research papers. They include: surveys and general information about Camp Baker (original site), Camp Baker/Fort Logan, Camp Ida Thoroughman/Camp Green Clay Smith, Fort Howie and Fort Ellis; maps and diagrams of the fort sites, many of which were drawn by Lawrence S. Heberle; journal articles and newspaper articles about the forts surveyed during the activity of the Montana Indian Wars of 1867; official documents on health and postings of soldiers; general articles related to western forts in Montana and photographs of selected fort sites. Many of the photocopied photographs of the Camp Baker, Camp Baker/Fort Logan, Camp Ida Thoroughman and Fort Howie sites were taken by Lawrence C. Herberle in 1974.
The Ryamond A. Mentzer Research Papers consist of photocopied journal articles, transcripts of interviews, copies of published and unpublished papers, and newspaper articles on the history and physical descriptions of 19th century forts in Montana. Other items include photocopies of the 1880 census and official government documents of the Department of the Army pertaining to Montana forts, copy photographs of the original forts and soldiers, hand-drawn maps, diagrams and plans, copy slides of Camp Baker, Fort Logan, Fort Ida Thoroughman, Fort Howie and Fort Maginnis portraying surveys of the physical locations and remaining structures of these forts in the 1970s. The primary concentration of this research is the location, layouts and structural content of the original forts and their conditions at the time of the research; however there is also substantial information on the social and military experiences of the soldiers assigned to Montana forts during the active period of the 1860s -1890s including the era of the Indian Wars.