Ancestry.com, UK and Ireland, Masters and Mates Certificates, 1850-1927 (Provo, UT, USA: Ancestry.com Operations, Inc., 2012).

• Title	Ancestry.com, UK and Ireland, Masters and Mates Certificates, 1850-1927 (Provo, UT, USA: Ancestry.com Operations, Inc., 2012).
  Short Title	UK and Ireland, Masters and Mates Certificates, 1850-1927
  Repository	Ancestry.com
  Source ID	S27
  Text	Master's Certificates. Greenwich, London, UK: National Maritime Museum.
  Linked to	Leslie George Walker