Discussion about books/library setups at work

I started a small bookshelf/library area at my work a few years ago with books I had and books I found for cheap at bookstores and thrift stores. My department has 2 locations about 30 miles apart (and someone in the separate corporate office has also started a bookshelf/library there). It just occurred to me that setting up an "interlibrary loan" system could be fun. We have couriers. My only thoughts on how to manage it so far are to set up a Goodreads account with shelves for each location, and use a for