[S139] Fred H. Meinershagen, The Prosperous and Diligent Blacksmith from Wersen: a Genealogy of Heinrich Adolph Meinershagen, January 1, 1785 - May 22, 1870 (Columbia, Missouri: F. H. Meinershagen, 1973), page 31.
Oscar Meinershagen, Jr. and Viola Emma Bergsieker were married on 19 May 1946. No place of marriage given.