The Shelby cycle history page
does refer to Shelby making bicycles for the Chicago Cycle Supply Co.
Shelby Steel Tube Co. 1891 Lozier-Yost Seamless Tube Works, then The Shelby Steel Tube Co. formed Lozier and Yost and bring technology back from England Jonas Feighner and Capt. D.L. Cockley raised $37,500 from Shelbians toward the venture. Among original board members are J.A. Seltzer, Shelby...
shelbycyclehistory.org
It also shows various fits and starts of the company, and even a Mead (see sprocket) connection.
Maybe the “A” serial numbers might start in 1923?
Shelby Bicycle Museum design “behind-the-scenes” Now that the Shelby Bicycle Museum is officially installed and open to the public, I thought it might be interesting to pull back the curtain on a few of the "whys" behind the visuals I designed. Why does the Shelby Bicycle Museum logo look like...
shelbycyclehistory.org
Or was it like 1925-A, and skipping some letters such as “L” and maybe “I”?