Date: 25 Shevat 5579
From: Rabbi Moshe Sofer, Brody
To: Rabbi Moshe Mintz
The responsum discusses the book 'Noga Tzedek' and its author, Lieberman, and the author's efforts to publicly condemn the book and its teachings, including the possibility of burning it.
Source: Shu"t Chasam Sofer Collected §94