1555 hours – Box Alarm – LaSalle and Lothrop, fire reported in a dwelling, Central has no address. Engines 39, 17, 42, Ladder 7, Squad 4, Chief 5. Engine 39 stretched on a dwelling at 2431 Lothrop Street. Possible civilian still inside proved to be negative. Chief 5 holding all companies. Room and contents fire on the first floor of a 2 story dwelling.