| Country | Participant | Institute
|
AUSTRIA | | |
| Dr. Franz Wawrik | Oesterreichische Nationalbibliothek |
| BELGIUM | | |
| Mrs. Lisette Danckaert | Bibliothèque Royale Albert Ier |
| Mrs. Greta Milis-Proost | Centrale Bibliotheek Rijksuniversiteit Gent |
| DENMARK | | |
| Mrs. Susan Vejlsgaard | Det Kongelige Bibliotek |
| FRANCE | | |
| Mrs. Maria Deurbergue | Bibliothèque Historique de la Ville de Paris |
| Mr. Marc F.E. Duranthon | Institut Géographique National, Paris |
| Mrs. Françoise Lapadu-Hargues | Bibliothèque Nationale de Paris |
| Mrs. Monique Pelletier | Bibliothèque Nationale de Paris |
| GREAT BRITAIN | | |
| Mr. P.M. Barber | British Library, London |
| Mr. William Burger | National Library of Wales, Aberysthwyth |
| Mr. Andrew S. Cook | India Office Library & Records, London |
| Mrs. J.S. Cook | University Library, Cambridge |
| Mr. P.S. Davies | Dyfed Archives Service, Carmarthen |
| Mr. Robert Davies | National Library of Wales, Aberysthwyth |
| Mr. J. D. Elliot | British Library, London |
| Mrs. Betty D. Fathers | Bodleian Library, Oxford |
| Mrs. Anne Hood | National Maritime Museum, Greenwich |
| Mr. J.E. Marx | Dyfed Archives Service, Carmarthen |
| Mr. Donald Moore | National Library of Wales, Aberysthwyth |
| Mrs. Patricia Moore | Glamorgan Archive Service, Cardiff |
| Mr. L. Norton | National Museum of Wales, Aberysthwyth |
| Mr. John Paterson | Directorate of Military Survey, Surbiton |
| Mr. Christopher Terrell | National Maritime Museum, Greenwich |
| Mrs. Sarah Tyacke | British Library, London |
| Mrs. Sandra E. Wheatly | University College of Wales, Aberystwyth |
| Mrs. Margaret Wilkes | National Library of Scotland, Edinburgh |
| SWEDEN | | |
| Mr. Erland F. Josephson | Krigsarkivet, Stockholm |
| Mrs. Margaret Lindgren | University of Uppsala |