Have you tried contacting the present day Anderson Little operation? The son of the gentleman who first founded the original Anderson Little used to post on AAAC regularly and was incredibly knowledgeable of their original operations. Good luck in your hunt!
Anderson Little, at one time, had stand alone stores in mid range malls. I purchased one of the most memorable melange color Harris Tweed sport coats from one of them in NC in about 1980. Needless to say, I outgrew it and it is long gone but have never seen that tweed again. They were about the same level as JAB is now in quality and just a bit more expensive as I recall.