Pārdaugavas garīgā dzīve zem lielgabalu

Pārdaugavas garīgā dzīve zem lielgabalu uguns" (Spiritual Life of Pārdaugavas under Cannon Fire) by Pastor G. Schaurum, published in 1929 in Umurga.
Subject: Memoirs from the time of the Bermontians (Bermondt-Avalov's army) in Riga.
Content: Contains 8 sermons delivered in St. Martin's Church during that conflict.