Biggest books in the world
Here are three examples of really big books. While the first is modern and is more of a gimmick than a book meant for reading, the other two are very real: it concerns a choir book from the 16th century (middle) and the famous Klencke Atlas from the same century (lower image). While they are rare, such large specimens, they do represent a tradition. Choir books, for example, needed to be big because they were used by a half circle of singers gathered around it in a church setting. If you are impressed with the size of these objects, just imagine turning their pages!
Pics: more info about big books in this post in my project blog (source of top two pics); the lower one features in this Tumblr post I wrote a while back.