So. Main St. between Elm St. and Chestnut St.
Source: 1928 Sanborn Fire Insurance Map
From 1928 McCoy’s Rockford City Directory, page 1033: Occupants (below)
201 S Main – Mid West Piggly Wiggley
203 S Main – James H. Farley, Banzai Lo Restaurant (owner S K Onishi)
205 S Main – Salamone & Sons meat market, also Dr. R S Grant
207 S Main – Hobart Print Shop, Rockford Army and Navy Supply
209 S Main – Pinkney’s Marble Grill, Illinois Hotel
211 S Main – Vacant
213 S Main – Henry Clay Shoe Store, Joe Rallo
215 S Main – Petritz Clothing Co.
217 S Main – Rockford Trunk and Leather Goods Co Inc
219 S Main – Muscle Shoals Cooperative Syndicate
221 S Main – Masters Shoe Co.
223 S Main – Dr. P. G. Luomons, A R Matts
225 S Main – Mrs. Jessie McRae, N J Metropolos
227 S Main – Main Hat Shop
229 S Main – Rice Accessory Co.