Ed Gould, in Vo.16/No.3 of the New England Bridge Conference Bulletin (July 1970) claims that the American Auction Bridge League was formed out of the American Whist League at a meeting in Hanover NH in 1927. This was pretty fast work considering modern contract bridge was only invented in 1925 by Vanderbilt. Modern bridge must truly have swept the country quickly. Ed goes on to say that the American Auction Bridge League merged with the United States Bridge Association in 1937 to form the ACBL (American Contract Bridge League).
The NH Open Pairs State Championship has been held every year since its origin in 1936. Other than an exception for military personnel serving in NH during WWII, it has always been Open only to NH residents.
Ed Gould wrote in the New England Bridge Conference Bulletin from May 1971: "This event...is a three-session event. Although only local rated, it is more highly respected within the state than any sectional."