Rule of Law

201 (c) Contributions to Collective Works.— Copyright in each separate contribution to a collective work is distinct from copyright in the collective work as a whole, and vests initially in the author of the contribution. In the absence of an express transfer of the copyright or of any rights under it, the owner of copyright in the collective work is presumed to have acquired only the privilege of reproducing and distributing the contribution as part of that particular collective work, any revision of that collective work, and any later collective work in the same series.
issue

http://www.law.cornell.edu/uscode/17/usc_sec_17_00000201----000-.htm
The Society of National Geographic had made a contract with Greenberg. The contract consisted that the Society of National Geographic would return all images 60 days after the images were published.

In 1996, the society, began in a development of a product called, “The complete national geographic”, this was 30 cd-roms that would hold front covers of all the National Geographic that were published from the first published. Mr. Greenberg’s images were viewed for 30 sec. This had broke there contract and also established infringements on copyrights.