A Small Handcar Shed
Railroad Model Craftsman 1991-10 pg. 70 Scale: O Category: "Structures - Track-side Details"
This structure is typical, but it is not based on any prototype. It roughly measures 16 by 8 by 10 scale feet (l x w x h). Includes a scale drawing.
Build a Small Gas Station
Railroad Model Craftsman 1991-05 pg. 82 Scale: O Category: "Structures - Towns/Cities"
This small gas station was very common before the era of freeways and can still be found even today. Includes a prototype photo, model photos, and a scale drawing.