Casgliadau Arlein

Blueprint. Some details have been highlighted using red pencil. The blueprint contains a plan and a graph. The text is written in German. The plan is from Zurich and is dated 5.10.16. There is a red sticker at the bottom of the page reading 'Annexe / 929'. Contained loose within a moroon hardback file with all other documents under accession number 85.184I/4.