I've been taking photos of grain elevators for years, here's a few of the smaller ones that I thought would be interesting subjects for a model railroad. 

Charlie 

Robinson, Kansas

Sidney, Iowa - Front view

Sidney, Iowa Back view.

One of my future plans to to change the layout's theme to a Rock Island mainline and let the Mopac operate the small switching yard.  I just finished Blair Lines Gerald RI depot and placed it on the right of way to see how it looked with a freight running by.  l

Here's a general overview of the Mopac Bagnell Branch.  More information is on my web site http://mopac51.tripod.com/