K37493 I have one of maxwells drawings number D-151 dated Jan 18, 1962 of Rotary OM and it include a note that interior drawings and photos are in the `1888 issue of the Railroad Gazette. If you can get your hands on a copy of the July 1977 and August 1977 issues of Railroad Model Craftsman, there was a really good article with lots of photos and excellent drawings of the Rotary OM and Tender and Water car. They are much more detailed that what Maxwell ever created. I have Xeros copies of the article in my plans collection. I have include two of the maxwell drawings I have that were not in the link to his drawings. As good as Maxwell's drawings are, I prefer Ken Pruitts drawings as they are more detailed and include a lot more measurements.
Dan Stuettgen