Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 10, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 11, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 12, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 13, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 14, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 15, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 16, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 17, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 18, 1961 from the Dave Sprau Collection.

Great Northern Dispatchers Record of Movement of Trains (trainsheet) for the Cascade Division 2nd Subdivision, March 19, 1961 from the Dave Sprau Collection.