Northern Pacific Reseach

http://research.nprha.org/NP%20Cabooses/Forms/DispForm.aspx?ID=11

http://www.trainweb.org/s-trains/davis/davis.htm

http://railworksamerica.com/forum/viewtopic.php?f=31&t=6811&start=60

http://the-blueprints.com/

Big Four Caboose NY Central.

http://madisonrails.railfan.net/lewman_drawings.html


http://nycshs.org/

Actual model maker...nice images....

http://mulletrivermodelworks.com/