Through a chance email conversation with the ALA librarian Karen Muller, I learned the ALA not only maintains a library of its own, but the American Libraries magazine also posts online some of its more interesting reference questions.
They're interesting, so check it out.
Also, I was curious, so I read more about the ALA library, including its mission:
The primary mission of the ALA Library is to help the staff of the American Library Association serve ALA members, and thereafter, the needs of the members of ALA, other libraries, and members of the public seeking information on librarianship. The ALA Library is a small special library with a collection that focuses exclusively on the history of and issues within libraries and librarianship. The Library's staff will respond to reference and information requests in accordance with this mission and collection scope.
Their website deserves some exploring, and has interesting information, including
- A lot of information about libraries in the United States and the ALA itself
- A professional tips wiki
- Librarian Tools for accessing professional information
- Recommendations of selected print, media, and online resources