Sanborn-1888-detl-Main-&-Occidental-GRAB-WEB July 11, 2015 1300 × 760 Seattle Now & Then: The Seattle Fire, Three Weeks Later A detail from the 1888 Sanborn Real Estate Map showing the northwest corner of Main and 2nd (Occidental), bottom-right, prepared for the construction of the three-story tall Squire Block, the source also of our brick piles after the Great Fire.