New York City's New York Police Department (NYPD) is preparing to phase out its long-standing tradition of handwritten command logs, which have been maintained in hardbound ledgers since the mid-19th century. These ledgers, containing daily entries by patrol officers, have chronicled everything from routine duties to historic events across the city’s 78 precincts.

The oldest remaining logs date back to the 1860s, including a volume from 1866 that details incidents such as a horse-drawn coal cart accident at East Broadway and Chatham Square and various other precinct activities. These records have provided a continuous narrative of city life and police work, capturing moments before the Civil War draft riots, the assassination of John Lennon in 1980, and the September 11 attacks.

Despite the rise of digital record-keeping and the department’s early adoption of computer-based crime analysis, these handwritten logs have persisted until now. The NYPD intends to introduce a new digital data-input system by September, initially piloting it in select precincts. This system will track officers on duty, completed assignments, and detainee information—including arrest times and health status upon intake—with a goal of providing precinct leadership a clearer and more immediate operational overview.

Police Commissioner Jessica Tisch, emphasizing modern efficiency, has advocated the transition away from what she termed “19th-century technology.” In February, she stated the department should leverage modern tools to enhance situational awareness throughout precincts.

While the physical ledgers will no longer be updated, they will remain preserved in storage or on display. Notably, the New York Public Library holds three historic volumes, including the 1866 ledger, and the Ninth Precinct in the East Village showcases a log from 1898. That particular ledger surfaced in an unexpected way when a California lawyer discovered it among his late father’s belongings and returned it to the precinct. The book contains entries from the period just after New York City’s consolidation into its current five-borough structure, capturing day-to-day police activities such as missing persons reports and officer sick leaves.

Some officers value the ledgers as tangible links to the department’s past, believing that the handwritten records create a connection to earlier generations of patrol officers that cannot be replicated by digital systems. As the NYPD moves toward modernization, the preservation of these historical documents serves as a reminder of the department’s long legacy documenting the city’s complex history.