This is a list I will maintain of useful links to use when researching your WW2 layout. I will grow this as I go.
- Biblioteca - Download Märklin catalogues, track plans, signal guides from 1930's to 2000
- Märklin Users Forum - Great bunch of knowledgeable people.
- Tiger tank transport train article - interesting article by a guy who built a tiger tank on carriage kit.
- Eisenbajnstiftung - Pictures of the railway in WW2
- Simple Computer Aided Railway Modeller - Software for layout design.