Armin from (the highly recommended) Brand New noted (back in January, when it happened) the logo change (and loss of letters) for Brooklyn Public Library. There is also a corresponding blog post at BPL, featuring some historical logos for the library, including the very earliest, below. See also the coverage on designtaxi.
Modified logos. Source: Eight and a Half website
Floor Mat concept (?). Source: Eight and a Half website
“The above book plate image appears, with minor variations, in the library’s earliest materials.” Source: BPL website
Institution: Brooklyn Public Library
Creator: Eight and a Half
Here's where you Ad/Lib: