Additional label gives some indication of locations and persons 'Sedgwick Club (Scotland) Wales Mount Tamalpais [California] Pasadena [Perry] Byerly'. Includes photographs re conference held by Carnegie Institution at Pasadena to discuss Californian Seismology 1929. Photographs dated in 1929. Almost all undated.
Labelled 'D' on front cover
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- ReferenceGB 275 Jeffreys/H1-H219/H108-H116/H111
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