<a href="https://en.wikipedia.org/wiki/Bill_W." id="mw2w" rel="mw:WikiLink" title="Bill W.">Bill Wilson</a>, co-founder of <a href="https://en.wikipedia.org/wiki/Alcoholics_Anonymous" id="mw3A" rel="mw:WikiLink" title="Alcoholics Anonymous">Alcoholics Anonymous</a>, takes his last drink and enters treatment for the final time.