The Dollar Line logo was dropped when Soo began painting equipment red and white. Just wanted a change of image.
The $ Line really represented the Soo very well. The Soo always counted their pennies. The old bromide about taking a penny out of a skin-flints pocket and Abe blinking could have origiinated on the Soo.
Was driving a company car in the eastern half of ND in the early 70's. Stopped in a non-Soo town to eat. Several children surrounded the car an marveled at the $ Line logo.
Still have a pad of lined paper with the old logo.
Take care