Flickr is primarily a site for sharing photographs, but there are lots of scanned historical images there as well. Old postcards are particularly popular, maybe because they are readily available, inexpensive, usually have identifying information, are small in size and easy to scan.
The other great thing about postcards is that they were usually taken to showcase the most important, scenic, or otherwise memorable locations in a community. That means there are a lot of postcards of libraries: large and small, public and academic, still-standing and long-gone.
If your library has some of these, consider putting them on Flickr as a way of sharing them with a large community of interested people. This doesn’t have to be something you do instead of putting some of them on your website or in the catalog or digital library,it can be an additional way to share. Using Flickr is simple, fun and easy, and you can add a link back to your library website so people can see what else you have available. You may get comments posted on your images, which can be a good way to gather more information about them, and to allow people to share their memories.
Once you’ve posted your library postcards to Flickr, I hope you’ll take the extra step of adding them to the Library Postcards group I set up there. It’s a good way to make it easier for people to find them.