"California, County Marriages, 1850-1952," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K8NK-141 : 9 March 2021), Lina Hartman in entry for Albert D Guibert and Helen E Greenlaw, 04 Apr 1928; citing Los Angeles, California, United States, county courthouses, California; FHL microfilm 2,074,713.
"California, County Marriages, 1850-1952", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K8ZL-854 : 18 August 2022), Lina Hartman in entry for Geo Pierre Guibert and Martha Harlene Burton, 1911.