What is often depicted as the logo of Allan Pinkerton's agency?

The logo of Allan Pinkerton's agency is often depicted as "The Eye." This symbol is associated with vigilance, watchfulness, and surveillance, which were core principles of the detective work carried out by Pinkerton's agency. The Eye represents the agency's commitment to close observation and investigation, underscoring their role in uncovering truths and apprehending wrongdoers during a time when detective work was becoming increasingly important in law enforcement. The use of this symbol helped to establish the agency's identity and brand, conveying a sense of authority and capability in the realm of private investigation. This emblematic representation aligns with Pinkerton's vision of proactive law enforcement and intelligence-gathering in the 19th century.