Penn Square Building ID: 12117 | This file appears in: Euclid Avenue Station The northwest corner of Euclid and East 55th took on the nickname "Penn Square," as did a theater just to the west, because it was near the Pennsylvania Railroad's Euclid Avenue Station. This ad appeared in the Plain Dealer. | Date: October 1, 1911 | Source: Cleveland Public Library, Digital Newspaper Collection Download Original File SourceCleveland Public Library, Digital Newspaper CollectionDateOctober 1, 1911 "Penn Square Building" appears in: Euclid Avenue Station