(2019) Similar ground (including Nadar) currently being covered on the Beeb radio series Speed of Light https://www.bbc.co.uk/programmes/m002gd80/episodes/pl

(2019) Similar ground (including Nadar) currently being covered on the Beeb radio series Speed of Light https://www.bbc.co.uk/programmes/m002gd80/episodes/player https://www.bbc.co.uk/programmes/m002gd80/episodes/player