• [S78] Vries, H. de. "Centralisatie van beleid: De Colleges van Curatoren aan de Nederlandse universiteiten van 1815-1940", Jaarboeken van het Centraal Bureau voor Genealogie 43 (1989).
  • [S86] Ter Laan, K.. Groninger Encyclopedie. Groningen: Spiering, 1954. Online at http://www.kterlaan.nl/
  • [S92] "Saskatchewan (Canada) Vital Statistics Database". Regina, SK, Canada: Saskatchewan Dept. of Health. Index and/or images online at http://genealogy.ehealthsask.ca/vsgs_srch.aspx
  • [S143] Jan Krijff. Correspondence. 2012, 2020 from e-mail address to Afina Broekman.
  • [S194] Malherbe, L. J.. Doos B, Stichting Museum voor Heemkunde, Almelo.
  • [S210] Gibbons History Committee. Our Treasured Roots: A History of Gibbons and Surrounding Areas.. Gibbons, Alta: Gibbons History Committee, 1982. ISBN: 088925396X.
  • [S296] Historische Werkgroep Ophemert en Zennewijnen, Compiler De Ophemert en Zennewijnen Page: Dopen in Ophemert, online: http://www.oud-ophemert.nl/index.php?b=2
  • [S486] Trompetter, Cor. Leven aan de rand van de Republiek: Stad en Gericht Almelo 1580 - 1700. Amsterdam: Bert Bakker, 2006.
  • [S535] Ineke Pierey. Correspondence. 2009 from e-mail address to Afina Broekman.
  • [S604] "Teengs", Nederlands Patriciaat 12 (1926).
  • [S687] Salt Lake City, UT, FamilySearch.org. 1917-46, 1917, Gerhard Van Bruggencate.
  • [S700] Canada Archives, Compiler Western Land Grants (1870-1930). Library and Archives Canada, online: http://www.collectionscanada.gc.ca/databases/western-land-grants/001007-119.01-e.php?sisn_id_nbr=272332
  • [S714] Regina SK Morning Leader, Regina, Saskatchewan.
  • [S715] Edmonton, AB Capital, Edmonton, Alberta.
  • [S825] "Ga Het Na in het Nationaal Archief", (Netherlands). 'sGravenhage, The Netherlands: Nationaal Archief. Index and/or images online at http://www.gahetna.nl/
  • [S870] "Outgoing Passenger Lists". findmypast: Find My Past. Index and/or images online at http://search.findmypast.com/. Payservice, Find my Past.
  • [S978] Wolowyk, Norma. Correspondence. 8 Feb 2001, from 116, 10440 - 108 Ave, Edmonton, AB, Canada T5H 3Z9, from e-mail address to Afina Broekman.
  • [S1114] "South Africa, Dutch Reformed Church Registers (Cape Town Archives), 1660-1970". Salt Lake City, UT: FamilySearch.org. Index and/or images online at https://www.familysearch.org/search/collection/1478678. State Archives, Cape Province.
  • [S1142] Andreas kerk, Lutherse Gemeente Rotterdam. Online at https://luthersrotterdam.nl/
  • [S1146] Canadian Headstones. Online at https://canadianheadstones.ca/
  • [S1162] Heer (de), Jan. Correspondence. 24 Nov 2001 from i@s-j.org to Afina Broekman.
  • [S1164] Bruggencate (ten), Anna. Correspondence. 2 Dec 2022 from e-mail address to Afina Broekman.
  • [S1172] Berg (van den), Jan. Correspondence from e-mail address to Afina Broekman.
  • [S1183] Owens, D. Bruggencate, "Bruggencate in Ponoka, AB." Listserve message to Ponoka Alberta Queryboard. 2 Jan 2000. Archived at e-mail address.
  • [S1192] The Mesdag Documentation Society: Biografie of H.W. Mesdag. Online at http://www.mesdag.com/bio.html. The Mesdag Documentation Society >.Biografie van H.W.Mesdag.
  • [S1223] De Twentsche Courant: Katholiek Dagblad voor Twente, Almelo, (1844-1996). Koninklijke Bibliotheek, 'sGravenhage, The Netherlands : Delpher.nl. Online at https://www.delpher.nl/