Great thread. I'd like to add that the Excelsior was not the only bicycle marque produced by the Excelsior Supply Company in Chicago. Before the turn of the century, they also manufactured the Thistle, made famous by world six-day champion Tillie Anderson.
I finally put some wheels on my Chicago Excelsior! It rides great, even though the seat is pretty rough. It goes well with my 1917 Maxwell, and the girlfriend's colorful pants! Speaking of color, I believe the bright green is original!
I have no idea what year this bike is I'll post some pictures maybe somebody can tell me, I don't want to give it away and if I put it up on the internet without knowing what it is I'll probably give it away, it appears to be all original everything works on it with the exception of the coaster brake and the tires are a little bad no Tire in the front and the back one has probably been dead for 80 years. Spokes are tight and everything turns thank you for any information you can give me