Redbird sounds like Moselle, but smaller(Moselle hasn't been a going concern since the death of the stagecoach). I see a Redbird Rd. in that area of the Bourbeuse headwaters, but no evidence of a settlement. Like Eastwood at Noser Mill this must have been a thing in the past, but today is nonexistent.
Where were you when you saw the neat old buildings? Road intersections and such?
Same with Spring Bluff, what locations are you finding? Roads, intersections, etc. to help others find it.
Some of these towns aren't anything more than a cluster of old houses anymore. Maybe they had a golden age before every family owned a car, but now it seems they only exist for the sake of hanging a sign. Before the consolidation of schools there was a school house every mile or so, evidenced by all the old roads with "school house" in their names. I think that centralizing the school districts may have done as much to kill the truly small town/settlement than anything else. But it has left a network of roads that get us to the river in different locations. While many of these are more driveways than actual public traffic lanes, they do still serve the floater, which is a good thing.
I'm camping with Scouts for the rest of the month and wont be able to hit the water until October, if then. Still, I'd like to have a destination to plan for. Late September we should get some rain and maybe I'll be able to float these headwater areas in a few weeks.