With respect to the Model Railroader articles one needs to be a subscriber then add on digital access.
With respect to the old Modeler Builder mags these are free - http://original.trainlife.com/magazines.
As for articles -
Frank Ellison "Route Switching" Model Railroader Mar 1950 - an excellent article
Frank Ellison "Where to Locate Your Industries" Model Railroader Jun 1950 - another excellent article.
I look as these articles as to how to improve my layout so I can run my trains with a purpose in mind. I believe Ellison's Delta Lines was freelanced but set up for 'prototypical' operations.