Links and References

1). The Pattern Of The Past, Guy Underwood, Abacus Edition Sphere Books 1972 ISBN 0 3491 3411 1

2). Places of Power, Paul Devereaux, Blandford Press 1999 ISBN 0 7137 2765 9

3). The Sun and the Serpent, Hamish Miller and Paul Broadbent, Mythos Press, ISBN 0 9515 1831 3

4). The Essential T.C.Lethbridge, T.C. Lethbridge (editors Tom Graves, Janet Hoult)
Routledge and Kegan Paul (London), 1980; ISBN 0-7100-0396-X

5). The Power of the Pendulum, T. C. Lethbridge, Routledge and Kegan Paul Ltd 1983 ISBN 0710083378

6). Pendulum: The psi Connection, Francis Hitching, Fontana / Collins 1977 ISBN 0 0063 4417 8