File of MS and TS letters between Etienne Rynne and others including John Leonard; Martin E. Byrne; Michael Kenny; Berrell Jensen; M.J. Molloy; Theo Snoddy; Rhoda ní Chrónín; Christina Keating; David Harris; George Cunningham; Grace Cantillon; Sara Whelan; Catherine Jennings; Patrick Wallace and others.

File of MS and TS letters between Etienne Rynne and others including Dr. Peter Vincent; Mainchín Seoighe (Kilmallock), George Mulqueen; Peter Kelly; Alexander Mateev; Eimear Hughes; Eamonn P. Kelly; Dr. Gabriel Cooney; Olive Alcock; Christy Killeen; Aida Monsell; Breda Conway; Paul McMahon; Paul Walsh; Judith McCarthy; Michael Mitchell; Edward Bourke; Robert Burke; Raymond Corcoran and others.

File of MS and TS letters between Etienne Rynne and others including James Ryan; Kevin Myers (Via the Irish Times); Maurna Crozier; Marion Meek; Dr. Róisín Kennedy; Risteárd Mulcahy (son of General Richard Mulcahy); Geraldine Carville; Fred Bazler; Eithne Mhic Aoidh; Rev. John Flannery P.P.; Konrad Dechant and others.

Letters between Etienne Rynne and Ann Druffel regarding a research project around excavations at St. Catherine's Church, Thomas Street, Dublin, in seeking to excavate the skull of Robert Emmet.

Correspondence between Etienne Rynne and John Mahony and Éilís de Buitléar discussing excavations at Drumcliffe, Co. Sligo and also discussing Boyle Valley Heritage Centre.

Correspondence between Etienne Rynne and the Roscommon Historical and Archaeological Society discussing planned events.

Letters between Etienne Rynne and Customs Office; re. importation of Copeland-Chatterson Index Cards.

File includes correspondence with Margaret Faul discussing her work and research on Ledsham Church Tower and Anglo-Saxon Crosses in the Keighley area. Includes drafts and offprints of Faul's articles. Also includes black and white photographic prints of sites that Faul studies.

Letter from D. Blair Gibson, University of California, Etienne Rynne attaching paper entitled The Cahercommaun Project.

Letters between Etienne Rynne and Nicola La Bouff, California, discussing La Bouff's article on Viking settlement in Ireland.