Original Letter By The Haktav Vehakabbalah - Fascinating Insight in to the Motives for it's publication

A first edition of the Sefer Haktav Vehakabbalah, published in 1839 which I sold this week, came appended with an interesting letter written by the author, R. Yaakov Tzvi Mecklenburg to a recipient of the sefer, Rav Chaim, the Av Bet Din in Gutentag (Dobrodzien of today). In the letter, Rav Mecklenburg writes of his intent in publishing such a book and the intended audience and his hopes that it effects their attitudes and beliefs.
He writes how he is responding to so-called wise men of the day, who venture to speak badly about the authors of the Talmud, accusing the Amoraim of a lack of knowledge of proper Hebrew. His work was thus intended to counteract the reform movements authors, whose writings of Bible Criticism and attacks on Rabbinic Judaism were prevalent at the time. It is therefore not surprising, that alongside the Vilna Gaon and Shadal, we find the author referencing non-Rabbinic sources, such as that of Julius Fürst, Mendelsson and Naphtali Hirz Wessely. R. Mecklenburg requests the assistance of the recipient of his letter to spread the published work and help defend the faith.
He concludes the letter by mentioning that he is in the process of completing a second work on the Torah, which will supplement the Haktav Vehakabbalah and work in the same method. Unfortunately, this second work was never published.