Safety Bulletins 1950s safety posters about static and proper footware hide in remote offices, where the curious haven’t stolen them… yet. Similar Images ...based on the tags: left-behind, safety-first, worker-graffiti... “N.L. ’45”. Brick Graffiti Series. Drawn in fresh concrete about 50 years before I took this picture, and only 2 years after this elevator blew up… One of the many small treasures hiding in the mill… Instructional film strips on the floor of a second floor closer. Equipment that did not sell at auction. Park Insurance Agency is no longer in business, nor would you be able to dial that phone number. In the soft wood of the machine, an employee left their mark. Beside the shaft building are two fans on skids, indicating they were used underground. The corners of these buildings are inscribed by a century of bored rail workers and delivery drivers. Pictured is the southeast corner of the Twohy, which is typical of mercantiles.