Side A: Paul Cass talking about site testing on La Palma. Cass was the Executive Officer. Includes: details of the sites he worked on; the team working on La Palma, what they did, observations, working system, living conditions on the island; details of other people working on La Palma; problems and dangers encountered on the island; the attitude of the local people to the team; description of observing there; international cooperation in the site testing program. Interviewed on 9 July 1985. Duration: 44 minutes (approx.).

Side B: Sir Francis Graham Smith, Astronomer Royal, talking about the plans and negotiations for the La Palma site. Includes: background on the site testing of La Palma; initial negotiations to test full on La Palma; international agreements on the La Palma Observatory; his approach to the planning and negotiations; the establishment of the Project team at RGO; the decision-making structure; liaison with IAU and the SERC. 15 Dec. 1985. Duration: 45 minutes (approx.).