A Tour in Early 20th Century Postcards
 Postcard above is not postally used. It depicts a busy street scene with a trolley and several pedestrians.   It is pre-linen with a white border, and  was published c.1920s by the Sabold-Herb Co., Philadelphia, PA.  The colors are very bright.  There is some scuffing on the divided back side, but no serious damage.  See larger view.
I have no connection to Delaware, but found these cards in an antique store in Atlanta and thought I'd share them.  They appear to be from the early 1920s.
Market Street, North from 8th Street (larger view)
Wilmington Country Club
Equitable & Dupont Buildings- Market Street
Washington Street Bridge
New Washington Bridge