Many plans and plates (including some from photographs, of equipment) bound in at rear. Condition: Boards rubbed and knocked, binding firm, pages clean, plates all in good condition except one: a fold-out plan has a split along one of the folds, is crumpled along one edge where it has been bound to protrude from the text block, and has staining to verso. Some plans have folded-over corners from poor handling. Ink stamp of original user (R.E. Officer-in-Charge) to front paste down, staining front free end paper opposite. Company stamp of another owner also to free end paper- A. Boake, Roberts & Co. Ltd (and also on front board), and ink Ex Libris stamp below this, signed W R Oliver. As with other volumes in this series, the ink has soaked through to stain the verso.