Fiction • Gadget City: A Story of Ancient
Alexandria (1944) • The Heavens Declare: A Story of
Galileo Scientist-
Astronomer (1949) • Strange Devices: A Story of the Siege of
Syracuse (1950) • The Coming of a King; A Story of the
Stone Age (1950)
Non-fiction • The World of Tomorrow – A Junior Book of Forecasts (1933) •
Inventors of the World (1962) • Jules Verne and his Work (1965) • Observer's Book of Geology
Works as editor • Anthology of
Armageddon (1935) • Jules Verne – Master of Science Fiction (1956) • Science Fiction through the Ages (1966) – two volumes ==References==