Publisher:Sphere

Thomson Books founded the Sphere paperback imprint in 1966. In 1985 Thomson Books sold Hamish Hamilton, Michael Joseph, Sphere Books, Rainbird Publishing Group and TBD Book Service to Pearson-controlled Penguin. In 1989 Robert Maxwell bought Sphere Books from Pearson's Penguin for £13.75m.

Common ISBN Ranges:

• 07221 1970-1990 (Then taken over by Orbit)
• 074740 1988-1989 (Later used by Orbit)

Wikipedia entry for Sphere

The publisher Logo changed between 1968 and 1969: the circle divided in two horizontally, lower half black, upper half usually red (as seen here) changed to a more stylised Globe (as seen here).

"Modern" logo^{[September 1970]}

Addresses

1970: 30/32 Gray's Inn Road, London, WC1 Source: The Maker of Universes
1971: 30/32 Gray's Inn Road, London, WC1X 8JL Source: Neutron Star
1973: 30/32 Gray's Inn Road, London, WC1X 8JL Source: Next of Kin
1982: 30/32 Gray's Inn Road, London, WC1X 8JL Source: Dorsai!
1984: 30/32 Gray's Inn Road, London, WC1X 8JL Source: Tactics of Mistake
1989: Sphere Books Ltd, Published by the Penguin Group, 27 Wrights Lane, London W8 5TZ, England Source: The Chantry Guild

Source publications

• Fever Dream: and Other Fantasies by Kurt Singer published September 1970