Contents include correspondence to Hughes from Geoffrey Wheeler regarding illustration for ‘Eagle’ Magazine, from Hughes to John Skinley from Vulcan Foundry regarding drawing of model locomotive, to EB Payne from ET Fearon regarding article by Hughes, to Hughes from LF Hall regarding Hughes’ paper, to Hughes from editorial director of ‘Mechanical Power’ requesting comment on previous issue, to Hughes from ET Fearlon requesting 2000 article on GT4, to Hughes from JW Innes regarding request for drawings, to Mr Low from Hughes regarding drawings sent to him, to Hughes regarding weight of engine, to Hughes from CR Simmons regarding return of photographs, to Hughes regarding Hughes Loco not being brought back into service by BR, a letter forwarded to Hughes from the Institution of Mechanical Engineers including Editorial from Gas Turbine. Photographs of the Duke of Edinburgh inspecting English Electric gas turbine locomotive in 1961 and locomotive components, drawings, charts, station gradient information, reports and an article.