Informazioni sulla fonte
Ancestry.com. Ancestors of Welding Ring and His Wife Ida Malvina Mailler [database online]. Provo, UT, USA: Ancestry.com Operations Inc, 2007.Dati originali: Josephine C. Frost, comp. Ancestors of Welding Ring and His Wife Ida Malvina Mailler. Brooklyn, NY, USA: 1935.