Great idea! Library outreach! A librarian rides it!
LOOK: http://www.neatorama.com/2014/07/04/book-bikes-are-tricycle-bookmobiles/
http://bikesintheheights.org/uncategorized/cleveland-heights-university-heights-library-book-bike/
http://denverlibrary.org/category/free-tagging/book-bike
http://www.americanlibrariesmagazine.org