1 The Church of Jesus Christ of Latter-day Saints, "FamilySearch Family Tree," database, <i>FamilySearch</i> (https://www.familysearch.org : accessed 17 Jan 2021), entry for Thomas Alberts, person ID MBTF-QKP.

2 (Gegevens van de Albertsmatak welke in 1907/1910 zijn geemigreerd naar Amerika).

3 The Church of Jesus Christ of Latter-day Saints, "FamilySearch Family Tree," database, <i>FamilySearch</i> (https://www.familysearch.org : accessed 17 Jan 2021), entry for Sytske Albertsma, person ID L6N3-319.

4 (Alle informatie omtrent Teede Foppes Walthuis en zijn afstammelingen is afkomstig en/of gecontroleerd door Teede Jan Walthuis in het jaar 2003.).