The LPI site hosts the photos from the Atlas as well as linking to NASA several times to show users images of other kinds of equipment and technical reports. No images on the home page are displayed as thumbnails and often the links take you to other government websites. There are a few ways to browse the images (including searching by latitude) from the Atlas but again there are no thumbnails for the images. The site also has the full text to the Atlas which was published in 1971.
The content of the project is interesting but it's very difficult to navigate the site and the links often take you away from the LPI pages. There is some metadata recorded but for the most part it is simply information that applies to all of the images rather than listing metadata for each image individually. Ultimately, it's a really interesting and dynamic collection but much too difficult to navigate to be especially useful.