Nasim, Omar W. Department Experimental Systems and Spaces of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
https://bertrandrussellsociety.org/quarterly-series/ (beliebiger Volltext)
Nasim, O. W. (2009). Russell's July 1915 letter on sense-data. The Bertrand Russell Society Quarterly, 142–144, 35-38.