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Journey notes and observations, 1766-1787, including notes from visits to London and Birmingham in 1766 concerning the manufacture of pig and bar iron. The notes contain the names and addresses of businessmen and details of their work, and notes on lead imports and exports in London. Also included are notes on forge processes at a foundry in Bristol, 1787, and observations on water wheels.

Letters, 1954-1994, relating to commissions and performances of works at the Cheltenham Festival, including the first public performance of the Clarinet Concerto (Opus 3), 1954.

Mae'r ffeil yn cynnwys taflen ystadegol am y flwyddyn yn diweddu 31 Rhagfyr 1977, cyfrifon, 1979, a dogfen yn dwyn y teitl 'Y sefyllfa heddiw', 1995, yn perthyn i Eglwys Bresbyteraidd Cymru Weston Rhyn, Croesoswallt. Daeth cofysgrifau ychwanegol yn perthyn i'r capel gan gynnwys tri llyfr cagliadau tuag at y Weinidogaeth, 1938-1982; dau lyfr y Trysorydd, 1936-1988, llyfr casgliad yr aelodaeth, 1920-1937; cyfrol yn nodi casgliad misol y plant, 1889-1950; llyfr yr eisteddleoedd, 1890-1963; ac ystadegau, 1910-1991 i'r Llyfrgell yn ddiweddarach.

Black and white photographs documenting research into the life cycle of mushrooms with a view to increasing crop size. There is some duplication.