Picture #3. During the day your business door is opened on an average of 50 times a day, while at home the door is opened an average of 15 times a day. A phony salesman or solicitor can engage you in conversation in the doorway while unnoticed he goes to work with a tiny pocket screwdriver and gives those two screws above the cylinder a few turns. It takes only two seconds.
Digital Commonwealth — Boston Public Library

Picture #3. During the day your business door is opened on an average of 50 times a day, while at home the door is opened an average of 15 times a day. A phony salesman or solicitor can engage you in conversation in the doorway while unnoticed he goes to work with a tiny pocket screwdriver and gives those two screws above the cylinder a few turns. It takes only two seconds.

[ca. November 1940]

CC0 — Public Domain
Digital Commonwealth — Boston Public Library

[Information from item housing] Locks...Locksmiths

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