QUOTE: Originally posted by Hauckra http://www.vetmed.auburn.edu/~smithbf/BFSpages/LDSIGprimer/TOC.html The Layout Design Primer is intended to assist the beginning to intermediate railroad modeler become familiar with basic and advanced layout design concepts and practices. http://www.layoutdepot.com/view.ihtml?step=3&fid=153 You may not have the software to download the file, but you can look at the plans and brief details, you may find one to suit your needs. http://groups.yahoo.com/group/ldsig/ This is a discussion forum for members and friends of the Layout Design SIG. It deals with all aspects of model railroad layout design and construction. The focus ranges from discussions about design procedures, techniques and software to most aspects of how to build what you've designed or try to design. They could be of great help for the design of the area you are looking to fill. Hopes this helps or gets you pointed in the right direction. I've used each for the planning of my RR empire.