I did actually see a Pyrimid springer on eBay that was black.(paintable) And it was tempting. But still finding something with "the look" for a 1900's project.
The Rollfast comes closer than anything. And yes, I've seen those old Schwinn "Bee Hive" springers I liked too.
I've shopped for alot of "eye candy" on eBay of late. Coach Lamps and the like that could lend itself to the appearance I'd like to come up with.
I checked out that Felt Chief and it has the look I'd like to get close to. I'm imagining a stretched frame, springer front like the Rollfast, and I like the look of those Russian engines, but the 50cc BikeBerry sells would do. Perhaps there are motor cycle junk yards that may have something viable from an earlier time. Perhaps made by Benelli or Galara. But there is no sense of urgency here. Just something to tinker with in the winter months.