In this letter, Voltaire mentions that he has been ordered to rest in his bed, and so will begin to transcribe Mahomet during the coming days. He discusses different routes that can be used to go to Aix la Chapelle and thanks Frederick for the beautiful compliments he paid Voltaire in his last letter. The letter begins and ends with a poem which mentions mythological characters and ideas such as Appollo and Parnassus.

Besterman suggests that this letter was written in 1742 rather than 1741 as proposed in the University of Southern California’s catalogue.