Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, prepared in 1968. Burlington Northern File Number 9436-9, Reference Number 10106.

Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, prepared in 1969. Burlington Northern File Number 9436-M1, Reference Number 10101.

Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, prepared in 1969. Burlington Northern File Number 9436-M2, Reference Number 10102.

Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, prepared in 1986. Burlington Northern File Number 9436-1, Reference Number 10103.

Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, undated. Burlington Northern File Number 9436, Reference Number 101.

Great Northern Engineering Drawing: Yard Office at Great Falls, Montana, undated. Burlington Northern File Number 9436, Reference Number 101.