Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1976. Burlington Northern File Number 1254-6, Reference Number 10109.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1976. Burlington Northern File Number 1254-E1, Reference Number 10109.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1910. Burlington Northern File Number 1254-4, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1910. Burlington Northern File Number 1254-5, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1910. Burlington Northern File Number 1254-3, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1910. Burlington Northern File Number 1254-2, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Trident, Montana, prepared in 1910. Burlington Northern File Number 1254-1, Reference Number 10112.