Copy letter from Robert William Frederick Harrison to Sir William Crookes, Foreign Sec 'Dear Sir, William, I should be much obliged if you could let me have a note of any expenditure already incurred by you in respect of the enquiry into Glassworkers' Cataract. The Home Office are making enquiries on this subject and it is desirable to have a statement ready whem asking for the grant authorized by the Treasury.' 9 March 1909