Copy letter from Robert William Frederick Harrison, to Mr Atlee Harrison would be glad if Atlee's department would undertake, at recoverable charges if necessary, a small work which was always done in house in summer on the roof of the building, namely to whiten a skylight and part of the roof which covers the one top room. Has not yet heard as to the results of the measurements his people took with a view to making some arrangement for the regular cleaning of the windows. 30 May 1913