Photocopying or reprinting our material without written permission is strictly prohibited. You may send your request to the Gaithersburg Permissions Department, or the New York Permissions Department. Requests received by Aspen are quickly forwarded to the appropriate office. Works created after 1978 remain copyrighted for the life of the author plus 75 years. Works created and published before 1978 remain copyrighted for 75 years from the publication date if copyright was renewed.
Works created by an individual while employed by the federal government are in the public domain.
Works published before 1922 are in the public domain. In most instances, concurrent permission is not required. A few authors have retained their rights to the material. You will receive a denial letter indicating permission must come directly from the author. The material I wish to use has a notice indicating that it was Reprinted from, Adapted from, Data from, or Courtesy of.