an interesting account of the merger forming ICL and the discussions involving ex Leo managers, including john Pinkerton, David Caminer and John Aris in defining the New Range to succeed the ICT 1900 range and EELM System 4 range, written by one of the key members of the New Range team. Resurrection, Spring 2019, Number 87, pages 23 – 25.
https://computerconservationsociety.org/resurrection/res87.htm#e