20-second seismogram of the 1884 New York earthquake (Dominion Observatory, Can.). From NY Tribune - scale not available.
On August 10, 1884, a more powerful earthquake hit. Estimated from 4.9 to 5.5 in magnitude, the tremor made houses shake, chimneys fall, and residents wonder what the heck was going on, according to a New York Times article two days later.
The quake was subsequently thought to have been centered off Far Rockaway or Coney Island.