- NIDS, Units 91-2
- Ffeil
National Inventory of Documentary Sources in the United Kingdom and Ireland (NIDS), Units 91-2: University of Sussex Library (0.012.025); Centre for South Asian Studies (0.016.005); University of Warwick Modern Records Centre (0.033.146-180); National Library of Scotland (0.44.311-439); West Yorkshire Record Office (0.108.001-027); Gwynedd R O (0.123.207-355)