Just found at the website of "Poplar Mechanics" magazine: In the Septemer 1962 edition they had a model plan and instructions on how to build your own Delta Queen wind-up model that's propelled by a rubber band. On their website they published a PDF file of this article "Modeling the Delta Queen - Last of the Mississippi River overnight passenger steamboats, this 285 ft. stern-wheeler carries vacationers on leisurely 10 m.p.h. river cruises".

Franz Neumeier