The First National Bank of Helena, Montana, was organized by Samuel T. Hauser and T.H. Kleinschmidt, in 1866. Prominent officers included: John S. Atkinson, D.C. Corbin, and E.W. Knight, cashiers; George H. Hill, assistant cashier. The bank was in receivership from its closing in 1896 until 1903. Records (1865-1903) include correspondence, financial volumes, legal documents, and organizational records of the bank and of its receiver, Eugene S. Wilson.

The Merchants National Bank of Helena, Montana, was originally established as L.H. Hershfield and Co. in Virginia City, Montana Territory, and for many years operated as L.H. Hershfield and Bro. It went into receivership in 1897. Records (1865-1903) consist of correspondence, financial records, legal documents, and organizational materials. There are subgroups for the White Sulphur Springs Association and for the United Hebrew Benevolent Association.

These records (1935-1943) of the U.S. Work Projects Administration (WPA) in Montana consist of administrative materials; historic record surveys of county, state, and federal agencies and local service and church organizations; and writers' project materials, including correspondence, research files, interviews with pioneers, and drafts of articles and books including Copper Camp, Land of Nakoda, and Montana Almanac, 1941.