when was alcoholics anonymous' book "The Twelve and Twelve" first officially approved by A.A..?

Answer 1

Book Description
Originally published in 1952, this classic book is used by A.A. members and groups around the world. It lays out the principles by which A.A. members recover and by which the fellowship functions. The basic text clarifies the Steps which constitute the A.A. way of life and the Traditions, by which A.A. maintains its unity.

Answer 2

I am not exactly sure of the date but it had to have been after 1936.I think that's when Dr Bob and Bill W first got together.1939 is when the Big Book first came out. I quote from the Forward in a copy of the 12 and 12 that I have,"Everywhere there arose threatening questions of membership, money, personal relations, public relations, management of groups, clubs, and scores of other perplexities. It was out of this vast welter of explosive experience that A.A.'s Twelve Traditions took form and were first published in 1946 and later confirmed at A.A.'s First International Convention held at Cleveland in 1950."