American Numismatic Society - Coin Identifier Catalog
ARTstor
The Artstor Digital Library provides over 1.6 million digital images in the arts, architecture, humanities, and sciences with an accessible suite of software tools for teaching and research.
Five College Museum Image Collection
Searchable database of the art collections of the Five Colleges and Historic Deerfield, a consortium of museums in Western Massachusetts, which provides access to information and images of over 60,000 objects.
Mount Holyoke Art Department Teaching Collection
High resolution scans of art images from published sources, including books and slides.
British Museum Collections Online
BBC History of the World in 100 Objects
Wildwinds Coin Catalogue
Ancient Coins: Roman, Greek, Byzantine, Celtic, England
Numiswiki
The collaborative numismatics project (lists a range of online collections available on the Internet).
Coins and Conscience: Popular Views of Money, Credit and Speculation