Use the database the U.S. Patent & Trademark Office's Patent Examiners use. Available only at the Denver Public Library's Reference Department at the Central Library, Level 3. Call 720-865-1363 for more information or to make an appointment. More information.
Comprises material on the American West, particularly Colorado and the Rocky Mountain Region and on the twentieth-century environmental conservation movement in the United States. Housed in the Western History & Genealogy Department.
Current, accurate information on Colorado print, news & wire services, college & military, online, radio and TV media. Call or visit the Central Library Reference Department to search the Colorado Media Guide database.