Date: 25 Av 5592
From: Rabbi Moshe Sofer
To: Rabbi Yisrael David
The responsum discusses a case where a tombstone with a holy name inscribed on it was deemed problematic by a rabbi, who ruled it should not be erected, and analyzes the halachic basis for this ruling, including the prohibition of deriving benefit from holy writings.
Source: Shu"t Chasam Sofer Collected §5