As far as track layouts and diagrams are concerned, this one is pretty simple. However, I think that its significance is in its author and date -- according to seniority lists from that time frame, Oscar Moody hired out on the Big 4/NYC in November of 1927, which is the date of this diagram. As a newly hired telegrapher/operator, he must have felt it necessary make this drawing so that he did not make a mistake at the interlocking plant during his first days on the job. Sounds like a fairly conscientious new hire. "Dock" was located at milepost 70.5 on the Cairo line (between Marshall and Robinson). The November, 1967 NYC company timetable still shows a 60 car northbound siding and a 70 car southbound siding in service (just prior to the Penn Central merger). CAPT Rex Settlemoir Collection
I agree, very conscientious to assist his memory, especially during times of stress. Any idea as to how his career progressed? I would imagine he did well.
Looks like very good planning on his part. I need diagrams like that to find my way around the house these days.