Reproduced below is an article from Psychic News about a test physical seance given by Gordon Higginson on 15th November 1974 at Stansted Hall. This seance was unique in that infra-red photographs of ectoplasm were captured and the séance was also recorded.  You can listen to or download the recording below:

Psychic News Test Physical Seance Arthur Findlay College 1974 – Click to Download Audio File