No, not that George W. Today's posting is from the first Thanksgiving Proclamation of President George Washington in 1789. I haven't seen the other George's proclamation yet, but I suspect that Washington's has better style.

THANKSGIVING PROCLAMATION

It is the duty of all Nations to acknowledge the providence of Almighty God, to obey His will, to be grateful for his benefits, and to humbly implore His protection and favor.

Therefore do I recommend and assign Thursday the 26th day of November next to be devoted to the service of that great and glorious Being, who is the beneficent Author of all the good that was, that is, or that will be. That we may then all unite in rendering unto Him our sincere and humble thanks, for His kind care and protection of the People of this country, for the favorable interpositions of His providence, for the great degree of tranquility, union, and plenty, which we have enjoyed, for the peaceable and rational manner in which we have been enabled to establish constitutions of government for our safety and happiness, for the civil and religious liberty with which we have been blessed, and the means we have of acquiring and diffusing useful knowledge, and in general for all the great and various favors which He hath been pleased to confer upon us.

We beseech him to pardon our national and other transgressions, to promote the knowledge and practice of true religion and virtue, and the increase of science among us, and to grant unto all Mankind such a dregree of temporal prosperity as He alone knows to be best.

George Washington
New York
October 3, 1789