Copy letter from Robert William Frederick Harrison to Messrs Angus & Co 'Dear Sirs, Some weeks ago I wrote to you asking if you would be able to fit my office chair on a revolving base, but I have so far had no reply. I shall be much obliged by your letting me know immediately, one way or the other, whether you can undertake this work because I am going away at the end of this week and wish to give precise instructions for its execution in my absence,' 20 July 1909