Steinberger's list of those immigrating to Russia from Leisenwald includes the Loos families that settled in the Volga German colony of Kutter.
Several Loos families immigrated to Russia arrving from Lübeck at the port of Oranienbaum on 8 August 1766. They settled in the Volga German colony of Kutter on 8 July 1767 & 29 July 1767 and are recorded there on the 1767 Census in the following households:
Johannes in Household No. 2 (arrived on 8 July 1767)
Johann Peter in Household No. 64 (arrived on 29 July 1767)
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Kt05, Kt43.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 476 & 492.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): 212-213.
- Steinberger, Manfred (translator). "A list of immigrants from Leisenwald to Russia in the year 1766 from Fürst Ysenburg Archive, Büdingen."