Elizabeth Moignard
D. L. Clarke
John Abercromby
Geological Museum (Great Britain)
Great Britain. Health and Safety Commission.
Museum of Practical Geology (Great Britain)
Great Britain. Joint Standing Committee for Pottery Industry.
David Barker
Laura Gray
Alan Marshall
Leonard Griffin
Sarah Richards
Emma Bridgewater
W. A. Morland
Lynn Knight
Unknown Author
Barbara Precious
Colin Hayfield