One would think in such a digitalized age an essay by Adams would be accessible somewhere, if a paper copy, I presume these were published, exists.
The following excerpt from J Q Adams diary may suggest the chapters by Adams were published anonymously in the Annual Register, and that is the original paper publication.
JQA Diary, volume 36
9 April 18309. IV. Good Friday.
Condict Lewis
Thomas.
Elliott. Jonathan[...]
I received from Joseph Blunt a Letter, and three half-sheets of Letter-press, being the last of my chapters upon Russia, Turkey and Greece for the American Annual Register—I revised them and answered Blunt’s Letter—There are three ridiculous errors of the Press on the last page, which I asked to have corrected
That certainly carries a bit of weight.
While it does narrow it down to possible six chapters about those three countries in that Register: 10, 11, 12, 13, 14, and 15. Q specifically says “chapters”, so at least two of them are his.
The timing is also strong. The register is for 1827/1828/1829, and his letter is dated the following year, 1830.
Is there more?
I mean, its solid to me. I’m convinced. But that won’t convince everybody. There is a shadow of a doubt that remains. Did he only write two or three of those six? Five of the six?
Unfortunately, with conservatives not willing to go into the historical field over the decades this is the situation we’re forced to deal with and be trapped in. We’ve let the progressives win. I’m hoping the work I do will help lay the groundwork to change that in the future, but we’re talking decades here. First we have to get rid of the unwillingness and that’s not going away any time soon.