Here is a list of websites to check if you are searching for an image on the web.   Some of these sites have images in the public domain, creative commons images or images ok to use for is always best to check the details about usage on the collections website...I have also included some information below.  This list is updated periodically. 

ARTstor is a digital library of more than one million images in the areas of art, architecture, the humanities, and social sciences with a set of tools to view, present, and manage images for research and pedagogical purposes

  NYPL Digital Gallery provides free and open access to over 700,000 images digitized from the The New York Public Library's collections, including illuminated manuscripts, historical maps, vintage posters, rare prints, photographs and more.

Wikimedia Commons is a media file repository making available public domain and freely-licensed educational media content (images, sound and video clips) to everyone.

WorldImages contains almost 75,000 images, is global in coverage and includes all areas of visual imagery. WorldImages is accessible anywhere and its images may be freely used for non-profit educational purposes. 

Digital Imaging Project
Images of sculpture and architecture from prehistoric to modern times

History of Medicine
Images from the History of Medicine (IHM) provides access to nearly 70,000 images in the collections of the History of Medicine Division (HMD) of the U.S National Library of Medicine (NLM)
The collection includes portraits, photographs, caricatures, genre scenes, posters, and graphic art illustrating the social and historical aspects of medicine dated from the 15th to 21st century.  The purpose of the IHM database is to assist users in finding and viewing visual material for private study, scholarship, and research. This site contains some materials that may be protected by United States or foreign copyright laws. It is the users' responsibility to determine compliance with the law when reproducing, transmitting, or distributing images found in IHM.

Web Gallery of Art
The Web Gallery of Art is a virtual museum and searchable database of European painting and sculpture of the Romanesque, Gothic, Renaissance, Baroque, Neoclassicism, Romanticism periods (1000-1850), currently containing over 23.200 reproductions. Picture commentaries, artist biographies are available.

Search by name, medium, subject, nationality,  museum

 Flickr Commons
The key goals of The Commons on Flickr are to firstly show you hidden treasures in the world's public photography archives, and secondly to show how your input and knowledge can help make these collections even richer.

 Visual Arts Data Service
VADS is the online resource for visual arts. It has provided services to the academic community for 12 years and has built up a considerable portfolio of visual art collections comprising over 100,000 images that are freely available and copyright cleared for use in learning, teaching and research in the UK.

maps, literature, documents, books and other relevant material concerning the past, present and future of historic cities and facilitates the location of similar content on the web.  We would like the site to be a meeting place for the lovers of historic cities and to function as a virtual archive, which will constantly develop and grow.

US National Library of Medicine site on Historical Anatomies:


Here is a list of sites to check for copyright information:

Copyright and Fair-Use Guides on the Web

A selection of free online advice for academics
Best Practices, from the American University Center for Social Media
Copyright and Fair Use, from the Stanford University Libraries
Copyrights and Wrongs, from the American Association of University Professors
The Copyright Crash Course, from the University of Texas at Austin
Copyright Term and the Public Domain in the United States, from Cornell University
A Map of Use Issues, from the University of Minnesota
Public Domain Slider, Section 108 Spinner, and Fair Use Evaluator, from the American Library Association
Tales From the Public Domain: Bound By Law? A comic book from public domain scholars at the Duke University Law School
Compiled Ben Wieder