Copy reports assembled by Lord Allerton of the GNR: experiments comparing the "Saveoil" process with the GNR's normal process and accompanying volume of photographs, October 1914; National Physical Laboratory report on tests on samples of 3 GNR sleepers creosoted under different processes; Prof. Percy Groom's report on the suitability of certain American woods as railway sleepers, April 1915; piece work earnings for men creosoting sleepers at Hall Hills works, April 1915; with some attendant correspondence.