Johannes Klug and his family immigrated to Russia from the German village of Salmünster. They arrived at the port of Oranienbaum from Lübeck on 9 August 1766 aboard the pink Novaya Dvinka under the command of Lieutenant Perepechin. They settled in the Volga German colony of Köhler on 21 August 1767 where they are recorded on the 1767 Census in Household No. 44.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Kl13, Kl25.
- Müller-Marschhausen, Ernst. “Russland-Auswanderer aus dem Bergwinkel um 1766 und die Spurensuche nach ihrer Rückkehr im 20. Jahrhundert.” [Online]
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 370.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): 250.