City Hall Commerrative Plaque

[Rapid Transit TO]

I read in one of the subway books, when they were digging the Broadway line's City Hall Station, they re-discovered the original Beech Pneumatic tube, the chassis of one of the old cars, and some other stuff..

It stated that a commerative plaque was commissioned to mark the location on NY's first subway tunnel, to be placed in the city hall station..

Anyone know where this plaque is currently located?

[Etoile]

From what I have read, the plaque may be apocryphal.

 

This article in American Heritage from 1997 says:

The tunnel itself became the nucleus of the present City Hall BMT station. For years a plaque there commemorated the great experiment, but today it is nowhere to be seen—merely a memory, like Beach’s dream.

 

However, Joseph Brennan's outstanding article on Beach Pneumatic Transit says this claim comes from Robert Daley's 1960 book The World Beneath the City. Brennan cites the book and then comments on it:

Today Beach’s tube is part of the BMT’s City Hall Station, and there is a small plaque on one wall which acknowledges Beach as the father of New York’s 726 thundering miles of subway. (83): It is hard to know now what to make of this claim. The plaque is not there now, and there is no mark on any wall to suggest that it had ever been there.

 

So...maybe there was never really a plaque? Or there was, but sometime between 1912 and now it vanished? Wikipedia says Cornell University "lost track of" Beach's tunneling shield, so it's possible the plaque has been lost too.