Image Libraries
A database of artworks created and collected in collaboration with over 3,000 UK institutions. Almost 30,000 images of which are made available under a Creative Commons license, allowing for their free, non-commercial use and distribution. Notable contributors include the Salisbury & South Wiltshire Museum, University of Aberdeen, and the Royal Ulster Academy.
Brasiliana Fotográfica is a space to provide both visibility and foment debate and reflection on a variety of documentary image collections -- approaching them as a primary source, but also as a digital heritage to be preserved. This initiative begins with the union of efforts of the Brazilian National Library Foundation and the Instituto Moreira Salles
The Britain from Above website features images from the Aerofilms collection, a unique aerial photographic archive of international importance. The collection includes 1.26 million negatives and more than 2000 photograph albums. Dating from 1919 to 2006, the total collection presents an unparalleled picture of the changing face of the British Isles in the 20th century. It includes the largest and most significant number of air photographs of Ireland and Great Britain taken before 1939.
Britain from Above was a four year project aimed at conserving 95,000 of the oldest and most valuable photographs in the Aerofilms collection, those dating from 1919 to 1953. Once conserved, the images were scanned into digital format and made available on this website for the public to see.
Provides online access to the remarkable treasures of the Chester Beatty Library through a searchable database of digitised artworks and manuscripts. The digital archive is continually expanding, so make sure to visit it regularly to see the breadth and diversity of the institution's collections.
A database of over 200 graphical user interfaces (GUI), presented with images, administrator reviews, and in a downloadable format. Primarily MS-DOS compatible, but some comparible systems may be supported. 
The Digital Public Library of America is charged with empowering people to learn, grow, and contribute to a diverse and better-functioning society. They attempt this by maximizing public access to shared histories, cultures, and knowledge
The Digital Repository of Ireland is a national digital repository for Ireland’s humanities, social sciences, and cultural heritage data. You can browse and search across multiple collections from some of the finest Irish institutions.
The Harvard Art Museums have played a leading role in the development of art history, conservation, and conservation science, and in the evolution of the art museum as an institution.
Through research, teaching, professional training, and public education, the museums strive to advance the understanding and appreciation of art. Programs encourage close looking at original works of art, collaboration with campus and community partners, and the production of new scholarship.
Harvard Library is home to all kinds of historical documents and objects that can enhance your research. 
These primary source materials can range from documents to images to artifacts and more — like handwritten poetry by some of the best known authors of our time, campaign materials from decades past, and images that capture people and places as they once were.
Dr Hans Sachs (1881-1974), with his Verein der Plakatfreunde (Society of Poster Lovers) and through its journal Das Plakat (1910-1921), systematically promoted commercial graphic design for the first time and tried to catalogue its history. The not-for-profit foundation of the International Advertising & Design Database was founded in 2014 in the Netherlands as an hommage to Dr Sachs -- it is the goal of the Foundation to publicize as much information as possible through its IADDB and to ask the public to actively participate by adding images, names, dates and all other kinds of information.
Notable collections in the database include artist monograms, advertisement jingles, and video advertisements.
The Internet Archive is building a digital library of Internet sites and other cultural artifacts in digital form. Like a paper library, they provide free access to researchers, historians, scholars, the print disabled, and the general public -- in this case, to over 3 million images. 
The Library of Congress is the research library of the United States Congress and is the de facto national library of the United States of America. These are its public digital collections.
An all-volunteer, non-profit public library of mostly public domain material relating to Marx or Marxist thought -- in this case, satirical and artistic works inspired by socialist and radical ideas. All of the high resolution digital records of publications and art, were created by Martin Goodman MD and the Riazanov Library digital archive project (unless noted otherwise).
The Flicker account of Minneapolis College of Art and Design library -- a national leader in fine arts, design, entrepreneurship, and sustainability education. The account showcases images from their archives and public collections, such as selections of artist books, posters, and photographs.
Monoskop is a wiki for collaborative studies of the arts, media and humanities.
Their index, log and media library sections each bring together material from Monoskop in one place -- these contain topics, concepts, practices, places, events and persons relevant for the studies of art, media and the humanities.
This collection of resources provides information about the subject of illustration, from collections of original art to relevant blogs and essays. A special feature highlights video interviews with noted practitioners, who offer compelling insights about their personal experiences and inspirations.
The site also includes and ever-expanding reference list on a diverse spectrum of illustrators across time, cultures, and artistic styles.
Over 600,000 high-resolution works of art from the collection of the Rijkssmuseum in the Netherlands. These images are published copyright-free, so you you can do what you like with them -- for either private or commercial purposes. Create your own Rijksstudio to collect, share, and download these images.
The Stern Graphic Collection is a private collection of drafts and drawings for goldsmithing and jewelery. It contains around 40,000 sketches and copper engravings from the last three centuries and new images of these are always being added.
The Digital Resources and Imaging Services Department is dedicated to the development of digital library collections supporting academic research, scholarship and education at Trinity College Dublin. With the launch of this first version of the Digital Collections Repository they are providing access to the remarkable treasures of the college's library for students, researchers, and armchair scholars anywhere in the world.
Explore this digital collection of almost 120,000 treasures -- including books, maps, paintings, manuscripts and photographs.
UbuWeb is a large web-based educational resource for avant-garde material.  Founded in 1996 by poet Kenneth Goldsmith, it offers visual, concrete and sound poetry, expanding to include film and sound art mp3 archives.
UbuWeb was founded in response to the marginal distribution of crucial avant-garde material. It ensures educational open access to out-of-print works that find a second life through digital art reprint while also representing the work of contemporaries. was created to aide researchers in the study of Japanese woodblock prints. It is primarily a database of Japanese woodblock print images and metadata aggregated from a variety of museums, universities, libraries, auction houses, and dealers around the world.
Each print image is analyzed and compared against all other print images in the database. Similar prints are displayed together for comparison and analysis. Multiple copies of the same print are also automatically lined up with each other and made viewable in a gallery for easy comparison.
UCD Digital Library refers to the digital collections and online services made available by the Library of University College Dublin. It is a curated, preservation-oriented resource that seeks to comply to internationally endorsed best practices and standards for an OAIS-compliant Trusted Digital Repository. 
Resources managed by the UCD Digital Library include: digitised cultural heritage data (printed documents, archival materials, artefacts, etc.) and research data arising from activity at UCD and elsewhere.
Over 850,000 free (do-whatever-you-want) high-resolution photos, brought to you by the world’s most generous community of photographers. Browse by subject, theme, collection, or search by more specific keywords. 
The Visual Arts Data Service has provided services to the academic community for 20 years and has built up a considerable portfolio of visual art collections comprising over 140,000 images that are freely available and copyright cleared for use in learning, teaching and research in the UK. VADS is a service of the Library & Student Services department of the University for the Creative Arts.
A free online database of pre-1900 documentary watercolours. Explore these visual records on a world map, search by topic, and compare watercolours from multiple collections in one place.
Working with private and public collections from around the world, this database offers high-resolution images of tens of thousands of watercolours, many of which have never been photographed before.
In addition to its online collection database of rights-protected works, the Yale University Art Gallery offers numerous digital archives and online resources freely for student, researchers, and the public. These collections amount to thousands of well-annotated, fully searchable, and interlinked images, on a variety of topics and in a variety of formats.