ARTstor
You can only download if you register for an account, which you'll need to do on campus. After you have an account, you can login from anywhere. This video tutorial has more detailed instructions.
Databases & Collections
The library subscribes to or has built databases that are excellent sources of images you can download and add to your papers and other projects. Some of them have licensing restricts that prohibit the re-publication (including open web publishing, such as on a blog or on social networking sites) of images you download. There are also quite a few digital collections that are free and open on the web. Use the library Visual Resources page for links and information about how best to use ARTstor and other image databases.