One-place study References Further reading Lenzen, Connie. "Proving a Maternal Line: The Case of Frances B. Whitney". Originally published in the National Genealogical Society Quarterly, 82, no. 1 (March 1994): 17–31. A case study illustrating the use of the cluster genealogy technique. Tony Proctor. "FAN Principles Unfolded". Parallax View blog (November 2016). A study of the relationship between 'cluster genealogy', the 'FAN Club' (Friends, Associates, and Neighbours), and general 'cluster analysis'. Genealogy