Copy letter from Robert William Frederick Harrison to Messrs Wilsden & Co 'Dear Sirs, I have received your statement of summer prices for our annual supply of coal, but before ordering I should let you know that there has been a general opinion that the house coal supplied a year ago has not been of such good quality as that which we had previously obtained through you, and I should be glad if you would look into the matter and let me have some assurance on the subject.' 12 July 1909