Francis Galton and Edgar Schuster. 1906. Noteworthy Families: An Index to Kinships in Near Degrees Between Persons Whose Achievements are Honourable, and Have Been Publicly Recorded (London: John Murray). Identified as “Volume 1 of the Publications of the Eugenics Record Office of the University of London”.
Galton and Schuster (1906) Noteworthy Families
Alternative source available via Archive.org: Galton and Schuster (1906) Noteworthy Families (external link)