We ordered ours from a local university. Our AA consistes of whole parishes (that's counties to the normal world)
Anyway, ours where VERY cheap ($7 each, I think) and contained any outline available (lakes, park, indian reserv., etc...) beyond BNAs/Census tracts and hwy/roads, all in color and up-to 40 inches wide.
You may wish to contact your local college/university and see if they have a department that can do this for you.