I’ve a number of posts here about libraries, but I’ve never seen one with such substantial shelving.
The Old Cincinnati Library before being demolished, 1874-1955 – Rare Historical Photos
Built in 1874 on the site reserved for an opera house, the Old Cincinnati Library was a thing of wonder. With five levels of cast iron shelving, a fabulous foyer, checker board marble floors and an atrium lit by a skylight ceiling, the place was breathtaking. Unfortunately that magnificent maze of books is now lost forever.
Some rather more genteel shelving on display here.
One of the world’s oldest reading rooms at the University of Oxford – The Mind Circle
This collection of images of the Bodleian Library in Oxford, while not of the most impressive library interior, are actually extremely rare, and most likely the best images of the interior available anywhere online. Photography of this library, which dates as far back as 1487 during the Medieval period, is usually completely prohibited as it contains many priceless original books, including manuscripts of the gospels of the Bible from the 3rd century, a Shakespeare First Folio and a copy of the Gutenberg Bible (one of 42 left in the world).