Methodological Record: How This Dossier Was Built

The Blanche Denise Ferrero-Willmann dossier was built through a specific methodological sequence. It began with identification of a specific claim in the published record: the 1920–1930 dating. The sitter was then treated as a research subject rather than a label, and a biographical reconstruction was attempted using civil records, migration documents, and patent databases. That reconstruction produced the biographical timeline that forms the core of the dating argument. Throughout, the commitment has been to primary-source priority. Claims have been assigned confidence levels explicitly. Open questions have been identified rather than glossed over. The dossier is designed to be reproducible: any researcher with access to the same source categories should be able to follow the same chain of evidence to the same conclusions.