John Lupia writes:

This summer, several times a week, a 30-foot truck filled with rough wooden shelves of books has arrived early in the morning at the New York Public Library's flagship research library.Each truckload contains thousands of books, which have been sitting for the past three years at a storage facility upstate.

Now, 1.5 million books are migrating home, although not to the shelves they once occupied, in the library's old stacks beneath the Rose Main Reading Room. From the loading dock, the shelves aremoved through the maze below the library, until they are two levels below the ground, underneath Bryant Park, which stretches like a lawn before the Beaux-Arts building.

In this subterranean section of the library, you can accidentally walk a city block if you don't plan right. The basement corridors pass by black pillars that carry the weight of the main readingroom and by the stonework from the reservoir that once held the city's drinking water. On the floor, red and yellow arrows guide the way, to a door through which only a few dozen people are allowedto pass.

"We want to keep our collection safe," says Johannes Neuer, the library's director of customer experience, who's in charge of the books' big move back to the library. "Once we go to the secondlevel, you'll understand why it's very important that only people who know what they're doing are allowed in the space."

It is a beautifully cool 65 degrees down here, with 40 percent relative humidity, and there's a new electric trolley system, in which books can be sent off to reading rooms upstairs in bright redcarts. Most importantly, there is space for 2.5 million books.

This underground lair of books was part of a resolution to a tumultuous dispute over the library's future.

To read the complete article, see:
The New York Public Library is Moving 1.5 Million Books to an UndergroundLair (www.atlasobscura.com/articles/the-new-york-public-library-is-moving-15-million-books-to-an-underground-lair)

To read earlier E-Sylum articles, see:
NEW YORK PUBLIC LIBRARY UNVEILS BOOK TRAIN (www.coinbooks.org/esylum_v19n39a32.html)
NEW YORK PUBLIC LIBRARY READING ROOM NOW READY (www.coinbooks.org/v20/esylum_v20n08a37.html)