Shirley Walsh (#1689 Adair Gen Forum, 14 July 2000) gave a small list, from 580 documents with Adairs Listed, indicating some items of interest. On the Belfast News-Letter film I have seen covering 1738 to 1750, unfortunately the film jumps from 23 March 1738 to 27 March 1739 and may be a film cutting error.I could not report on#6108, Jan 23, 1739:George Shaw, Tobergill Parish, Donegore.Thos. Ben Adair surviving trustee children late John Agnew;#6121, 20 Feb 1739.ADHOUSE.Hugh Boyd, Pottinger's Shop, James Adair, Belfast Stables. # 11257, 4 March 1739 Sir Robt Adair and Sam Wilson, paper mill Ballymena, was of interest to me but a film note indicates missing and damaged in cutting for that date.
Just a general note about the Belfast News-Letter and General Advertiser of Henry and Robert Joy which has in early issues this line under the newsletter name: "With the Freshest Advices Foreign and Domestick" -- an ad which is indexed is not necessarily the first one published, and in some cases the ads run over a number of issues.
The Belfast Newsletter is a fascinating record of local and world items of interest as it received material from London, Paris, Berlin,and other major cities in Europe and North America which it published. It also includes poems, gardening advice, notices for rewards for information leading to who put a mare into someone else's paddock, who shot seven ducks who someone raised, notices of husband's whose wife eloped in the night, etc. World news includes things like: Article XII Treaty of Peace concluded at Utrecht 1713, an account of the celebrations on Friday, July 6 1750 in Dublin on the Anniversary of the Battle at the River Boyne in the Year 1690, an article published by the Bristol Gazette Extraordinary, Saturday, July 29  from the New York Gazette, New York, June 26, 1775 on Bunker Hill.
For anyone interested in history of the mid to late 1700's or more local events which may have concerned theirfamily , the Belfast News-Letter is invaluable.