Box containing seven hundred and fifty-two folded plans, correspondence, progress of work books, lists of orders, proposals, technical paperwork and specifications for the following engine numbers:

- one hundred and sixty plans for 'Idar' (engine number 992).
- three hundred and twenty-two plans for 'Tajik' and 'Zanji' (engine numbers 993-94).
- two hundred and seventy plans for 'Mikir' and 'Sylu' (engine numbers 995-96).