These three letters were difficult to read and translate so a detailed summary is not available. In the letter of January 8, Frederick mentions (and probably expands upon), varied topics such as Machiavellian tactics, marriage contracts, and Mexico. In the letter of February 3, he proposes devoting the century (the 18th century) to Louis le Grand and asks what Voltaire thinks of it. The letter of April 12 includes some lines of poetry. All three letters are signed by Frederick.