Image, Sound and Film Files  

Image Files

General

American Institute of Graphic Design (AIGA)
American Memory Project (Library of Congress)--link takes you to a list of collections that contain photographs
Getty Images
Digital Librarian--the "Images" section
Google Images
Life Magazine Photo Archives
National Portrait Gallery
New York Public Library Digital Gallery
10 ways to find free images

**Remember to also use the database ArtStor

United States

American Geological Society Library--grant from NEH, contains images from the 1930s & 1940s
National Archives
NPR: The Picture Show--a photo blog

Subject Specific Image Files

Cartoon Image Database--from the Billy Ireland Cartoon Library and Museum, The Ohio State University
Siena College CDLC (Captial District Library Council) Digital Image Collection--contains images of Siena College and documents held in the Standish Library special collections.
New York State Archives image files

Sound Files 

Global Music Archive--collaboration between the Blair School of Music and University Libraries at Vanderbilt University.

Petrucci Music Library--wiki based respository aimed at creating a virtual library of all public domain musical scores as well from composers who elect to contribute their musicNational Jukebox--over 10,000 recordings from the Victor Talking Machine Company between 1901 and 1925.  From the Library of Congress.

Sibley Music Library: Musical Scores--includes all content from Smithsonian Global Sound as well.

New York State Archives audio files
 

Film Files

General

Academic Film Archive of North America--freely available academic and documentary films of historic significance.
C-SPAN Video Library--videos (1990-present) of state and federal politics, campaigns, news conferences, foreign affairs, business, education, health, technology
FedFlix--U.S. Government Films created over the past 70 years on a wide variety of topics
Internet Moving Image Archive
Moving Image Source

Subject Specific Film Files

Europa Film Treasures--51 films dating mostly from pre-1940s depicting European cultural heritage
Film Noir Foundation
UCLA Preserved Silent Animation--silent films from pre-1930s
New York State Archives film files