SF Encyclopedia Picture Gallery
J K Heydon writing as Hal P Trevarthen. World D: A Brief Account of the Founding of Helioxenon (London: Sheed and Ward, 1935) [hb/M Potter]
Image courtesy of L W Currey, Inc
J K Heydon writing as Hal P Trevarthen. World D: A Brief Account of the Founding of Helioxenon (London: Sheed and Ward, 1935) [hb/M Potter]
Image courtesy of L W Currey, Inc