Emil Friedrich von Boetticher’s Epitaph Emil Friedrich von Boetticher’s Epitaph. Photo: U.Muzikants 2018 Author: sculptor August Folz (Volz, 1851–1926).Date: 1908Material: stone,Technique: forgingSizes: Epitaph to Riga Burgomaster and Dom Cathedral Inspector Emil Friedrich von Boetticher (1835–1907).