MapLib.net
For example look at this image of Middle Earth. An example of how we could use this would be scanning a picture of the library's floor plan and then adding notes about the different locations (current periodicals, periodical stacks, reference, ILL, study rooms, etc.). Apparently you can take your "map" from MapLib.net and add it to your website. I think professors might also be able to use this for classes on History or Biblical Studies. What could Dr. Beitzel do with this?
I read the Google Terms of Service and they say that, "The Google Services are made available for your personal, non-commercial use only." It is clear they don't want you to make money off of the technology they've developed with out a contract with them but I'm not sure about educational uses of technology.