Mae'r cwcis hyn yn gwbl angenrheidiol ar gyfer weithrediad y wefan.
Rydym yn defnyddio Google Analytics i fesur sut ydych yn defnyddio'r wefan er mwyn i ni ei wella yn seiliedig ar angen defnyddwyr.
Gall y cwcis hyn gael eu gosod gan wefannau trydydd parti a gwneud pethau fel mesur sut rydych yn gwylio fideos YouTube.
Amgueddfa Cymru
Black hardback file with minutes typed in black and red ink on white, blue ruled paper. Also contains a number of letters and memos regarding the meetings, printed in black ink on cream paper. The Institution of Mining Electrical & Mechanical Engineers South Wales Branch, minutes of the meetings from September May 1960 - April 1968 (the file has been wrongly labelled as the minutes from September 1954 - March 1960 which are actually in accession number 85.135I/6)
