Groaning boards were the wonder in London in 1682. An elm plank was exhibited to the king, which, being touched by a hot iron, invariably produced a sound resembling deep groans. At the Bowman tavern, in Drury Lane, the mantelpiece gave forth like sounds, and was supposed to be part of the same elm tree. The dresser at the Queen’s Arm Tavern, St. Martin le Grand, was found to possess the same quality. Strange times, when such things were deemed wonderful — so much so as to merit exhibition before the monarch.

— Frank H. Stauffer, The Queer, the Quaint and the Quizzical, 1882