Abstract The Libby Lumber Company was a retail lumber business in Libby, Montana. In 1916 it was sold to the Libby Yards Company, which in turn was sold to the Monarch Lumber Company of Great Falls in 1921 and to Building Service, Inc. in 1933. Under all four names the business conducted a state-wide retail lumber and real estate trade. Records (1914-1961) are arranged into subgroups for the different companies and include general correspondence, court papers, financial records, legal documents,...