This series consists of a nominal index of SOE contacts and personnel in Spain, Portugal and occasionally North Africa, along with known or suspected friends of the Axis powers or German agents operating in Iberia. The cards are typewritten with later manuscript additions and amendments, and are mostly white, though a few pink cards exist in the index. these pink cards relate to both Allied and enemy subjects, and the colour does not seem to have any significance (unlike the mainly colour coded Scandinavian index). The index is not entirely complete - the first surviving card is under the name of Jose Maria Betazom, and the fate of the earlier alphabetical cards is not known, though it is thought that all the subsequent cards survive.
The cards give the name and where known contact details for SOE personnel and contacts, any aliases used, sometimes biographical details and information about the subject's usefulness to SOE, plus details of any operations they were involved in or escape lines they were linked to. Many of the cards relate to SOE contacts with experience of Iberia though currently based in the UK.
The cards relating to Germans or Iberian subjects sympathetic to the Axis cause detail the known or suspected roles of the subject and sometimes biographical details. Both types of cards sometimes give references to SOE files.