The page linked above contains dozens of downloadable speaker recordings from members with 30+ years along with those who have historical knowledge and insights about the development of Narcotics Anonymous.
LOVING OUR LONG-TIMERS
or LOL is held every Wednesday evening @ 7:00pm Central Time (8:00pm Eastern) 3:00 pm UK
Dial: 1-712-770-4160 Access Code: 108786#, Replay: 1-712-770-4169, 108786#
To attend from the UK dial +44 330 606 515 and enter this code: 108786#
For Playback enter: 108786#