Model this scene! Cedar Rapids, Iowa

 

"Untitled photo, possibly related to: Grain elevators and flour mill, freight yards. Cedar Rapids, Iowa," September, 1941, Marion Post Wolcott, FSA/OWI Collection, The Library of Congress, negative LC-USF34-090050-D

These images were recorded by Marion Post Wolcott in Cedar Rapids, Iowa in September, 1941. She was one of many professional photographers of the era who were contracted by the government to record facets of industry, culture, daily life, etc., under the auspices of the Farm Security Administration that morphed into the Office of War Information. They were mostly medium format, so the negatives are generally high quality, and the photographers were generally free to choose their subject matter. As they were recorded under government contract, there were (and are) no copyright restrictions on their use [note that people do download these images and sell prints of them; if you buy such an image you are generally paying for that which you could acquire for free with a little sleuthing.]

"Grain elevators and flour mill, freight yards. Cedar Rapids, Iowa," September, 1941, Marion Post Wolcott, FSA/OWI Collection, The Library of Congress, negative LC-USF34-090049-D

Back to these images... these three images illustrate (to me, at least) what would make an exceptional switching layout opportunity. I presume that these images were recorded over a relatively short period of time, yet you can see in the images the activity level. This entire scene could be recreated in a walkaround island four to six feet wide, depending upon your space and eight to twelve feet long, incorporating some or all of the industries and tracks shown or it could be narrowed to include fewer tracks and perhaps flats instead of full structures on one side and run along a wall. 

"Grain elevators and flour mill, freight yards. Cedar Rapids, Iowa," September, 1941, Marion Post Wolcott, FSA/OWI Collection, The Library of Congress, negative LC-USF34-090051-D

In these images you can see four (!) locos switching these tracks. There are plenty of operating opportunities here. There is also an interesting mix of cars, including the usual box cars plus automobile cars, stock car, reefers (including a dry ice refrigerator car,) tank cars, and coal gondolas. The Sanborn maps for this location can likely be located and there are probably resources about Cedar Rapids in historical society publications. If you're an aprtment dweller or have a small to modest-sized room available for your layout, you could do worse than to recreate this scene.