Flickr has many photos. Think I'll learn a bit about geography with the tags. Uploaded one photo but was not able to retrieve it by its tag. Will return to this task at another time.
I attended a Professional Development day for the SFUSD School Librarians and took some photos. See them all at Blog Date, August 24 - they are labeled as a set and as public. One picture, however, is labeled SchoolLibrarylearning2.0.