(1) The library's collections are non-circulating, with the exception of non-Montana related federal documents which may be borrowed through the Montana state library.

(2) Some materials will be made available to patrons who cannot conveniently visit the library through interlibrary loan. Items which are deemed by the librarian to be rare, fragile, difficult to replace, or of high use in the library will not be loaned. Positive microfilms will be loaned if a security negative is available or readily obtainable. Negative microfilms will not be loaned. Loans will be for a two week period, non-renewable, and for use in the borrowing library only. Not more than tworeels of microfilm or two volumes will be loaned to a patron at any one time. Mailing both ways must be insured at the rate indicated by the society's library.

(3) All loans must be approved by the head librarian or, in his/her absence, by one of the professional library staff.