Use the searchable catalog to see if a work has a registered copyright. Remember, even without registration, works published after January 1, 1978 may be covered by copyright protection.
Fair Use is a doctrine that allows use of copyrighted material without permission if it meets certain criteria. While the idea of fair use seems simple, it can actually be very complicated.
4 factors must be weighed when determining if use is fair:
Purpose and character of use
Nature of the copyrighted work
Amount or substantiality of the portion used
Effect of the use on the market for or value of the work
