Oliver Sutherland may well want to look at some letters written by Karl Popper regarding his Father ILG Sutherland. This material originates from the Canterbury College Inwards Correspondence. All the extant Popper correspondence has been photocopied and placed in folders in the reading room. These folders are in the first stack of archives finding aids shelves on the very bottom shelf. Oliver (or anyone else for that matter) is welcome to consult these materials at their lesuire. Again, if you have any problems, fetch me.