4. Commercial-St.-PROSCH-n-fm-Main-1881-WEB June 9, 2012 1200 × 833 4. Commercial-St.-PROSCH-n-fm-Main-1881-WEB Squire’s Opera House is on the right, mid-block, and the New England Hotel on the left, at the northwest corner of Commercial Street (First Ave. S.) and Main Street. This too is taken from one of the Prosch albums and he dates it 1881.