Designing and Modeling PRR Track
The Keystone Modeler 75 Autumn 2010 pg. 24 Scale: HO Category: "Track"
This article describes PRR tie spacing track standards, track center spacing, and how to model those standards. It is also a good general article on how to lay track (flex track). Also covers ballasting, painting, and detailing the track.
Reflectorized Safety Striping
Railroad Model Craftsman 1974-02 pg. 52 Scale: (none) Category: "Freight Cars"
How to simulate safety striping that started appearing on rolling stock and locomotives in the 1970's.