sabrown has an excellent suggestion.
It is also possible to receive special permission to use any wiring method for special purposes such as exhibits, etc.. I'd make the case to the AHJ that you are following whatever code and standard of the day to reproduce a copy of the era.
I worked for a guy that actually wired a room in his house with exposed knob and tube with AHJ permission. Let's face it, you're trying to reproduce a limited version, should be really neat, please send pics when you're done!!
