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Typed in purple ink on off-white, company headed paper. A two page letter from Escher-Wyss & Co (on company headed paper) to the Powell Duffryn Steam Coal Co. Ltd, Bargoed Collliery. A letter regarding the 40,000 cub.ft. compressors. Letter dated 7th February, 1921. Contained loose within a maroon hardback file with all other documents under accession number 85.184I/4. Documents 85.184I/4 (74) - 85.184I/4 (78) are held together with a paperclip.
