Here is a Flyertalk thread with a couple of photos, including the economy class lounge - looks like an Admirals Club:
http://www.flyertalk.com/forum/american-aadvantage-pre-merger/1215386-aa-boeing-747-discussion-historical-consolidated.html
http://www.flyertalk.com/forum/american-aadvantage-pre-merger/1215386-aa-boeing-747-discussion-historical-consolidated.html