Copy letter from Robert William Frederick Harrison to Professor S [Silvanus] P [Philips] Thompson FRS 'Dear Sir, In reply to your letter of the 23rd instant, I am sending you the two papers by Dr C V Drysdale which you now withdraw. In order that the Standing Orders may be complied with will you please send a line agreeing that the papers will be regarded as not having been communicated to the Society at all? I am sending by separate post a roll of diagrams illustrating one of the papers.' 26 July 1909