The iDigital Medium website has launched a hunt for 'lost treasures' relating to survival and Instrumental Transcommunication - recordings and related documentation. Details are here:
https://idigitalmedium.com/lost-treasures/
The SPR's archive also welcomes offers of material relating to psychical research, whether printed, manuscript, audio or visual. Many collections are destroyed or dispersed, usually after the death of the compiler, and researchers are urged to make adequate provision for their records. Those wishing to discuss possible donations to the SPR can do so by writing via the website in the first instance, selecting the 'Psychical Research Question' option.