Bill W one of the co-founders of AA speaks about the Big Books history and creation. This consists of two seperate speaks, the first is at the 30th anniversary founders day in Akron. 
The second speak may be from the same event but there is no way to know, the introduction of Bill the 2nd time does mention the 30th anniversary.
Repost from Oct of 2018, most of the recordings of Bill W are pretty bad quality and these 2 speaks are some of the clearest around.
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