Sometimes you stumble across something that really makes you say "wow" and reminds you that there's so much more to this internet thing than just the latest web app. Case in point is this article describing some of the visual resources available on the web. The deep web. These images won't show up in search engines' image searches or on Flickr (save one exception), but instead can only be accessed via the links below.
The images are a part of online collections created by institutions in the U.S. Some of the images may be a part of the public domain, but many will require permission or accreditation in order to use. So, no, these aren't necessarily images you can use in your next blog post, but that doesn't mean they're not useful. Instead, if given permission, these images could be used in the classroom, in private study, or even included in a media project or publication.
Dr. John Jaeger
Doctoral Research and
Dallas Baptist University