New York City actually has 3 library systems, the New York Public Library, Brooklyn Library, and Queens Library. Queens Library is the largest library (by circulation) in the united states, and the fifth largest library in the world; their key strength lies in their foreign language (popular fiction) books and media collection. Their digital collection is powered by Overdrive, and their chinese collection is powered by Apabi. actually apabi books can't be downloaded to an ereader so this doesn't really count does it?
check out their digital collection.
http://www.queenslibrary.org/ they also have some of the latest comic ebooks, e.g., "x-men: first class", and graphic novels.
btw, I have library cards for NYPL, brooklyn library, and queens library.