The bulk of the collection contains correspondence received by American medievalist Bryce Lyon. The correspondents are primarily scholars based in Belgium, but there are others with addresses from the United States and the United Kingdom. The topics of the correspondence relate to Lyon's research on aspects of the social and economic histories of the Low Countries and England during the medieval period, but include personal exchanges, as well.

Letter on stationary. Commission Royale D'Histoire, Koninklijke Commissie Voor Geschiedenis letterhead. Sent from Brussels, Belgium. Sent to Brown University, Providence, Rhode Island, USA. Written in French. 1 page.

Letter on stationary. Archives G

Photocopy of an article. Titled: BIOGRAFIE - BIOGRAPHIE. Labeled Album Carlos Wyffels, Brussel, 1987. Written in French. 4 pages. Handwritten notes and editing.

Photocopy of an article. Titled: PREFACE. Labeled Miscellaneous Carlos Wyffels. From Brussels, Belgium. Written in French. Written by Jean Favier. 3 pages. Handwritten notes and editing.

Photocopy of an article. Titled: Voorwood. Labeled C. Wyffels Miscellaneous. From Brussels, Belgium. Written in Dutch. Written by E. Persoons. 4 pages.

Letter on stationary. Dr. CARLOS WYFFELS, ERE - ALGEMEEN RIJKSARCHIVARIS letterhead. 1 page. Handwritten editing.

Letter on paper. 1 page.

Obituary on paper. No date provided. For Carlos Wyffels. Died December 13, 2003. Written by Walter Prevenier, Raoul Van Caenegem, and Bryce Lyon. 4 pages.

Christmas card written by daughter, Anna Wyffels. Sent to Hanover, New Hampshire, USA. Sent from Belgium. Includes envelope. Includes funeral announcement card written in Dutch.