- 1General arrangement no 1495 (YA1966.24/3/21/C/1/97)
1856, item - 2General arrangement drawing no 3100 (YA1966.24/3/21/C/2/266)
1858, item - 3General arrangement drawing no 5662 (YA1966.24/3/21/C/2/451)
1860, item - 4General arrangement drawing no 8429 (YA1966.24/3/21/C/3/679)
1863, item - 5General arrangement drawing no 8865 (YA1966.24/3/21/C/3/750)
1863, item - 6General arrangement drawing no 11299 (YA1966.24/3/21/C/4/951)
1865, item - 7General arrangement drawing no 12469 (YA1966.24/3/21/C/4/2032)
1866, item - 8General arrangement drawing no 13313 (YA1966.24/3/21/C/4/2034)
1867, item - 9General arrangement drawing no 17241 (YA1966.24/3/21/C/7/2575)
1870, item - 10General arrangement drawing no 18544 (YA1966.24/3/21/C/7/2730)
1871, item - 11General arrangement drawing no 20107 (YA1966.24/3/21/C/8/2925)
1873, item - 12General arrangement drawing no 22350 (YA1966.24/3/21/C/10/3284)
1874, item - 13Engineering drawings for orders recorded in Order Book No 1, numbers 1-258 (YA1966.24/3/21/C/1)
sub-sub-sub-series - 14Engineering drawings for orders recorded in Order Book No 2, numbers 259-555 (YA1966.24/3/21/C/2)
1858-1861, sub-sub-sub-series - 15Engineering drawings for orders recorded in Order Book No 4, numbers 849-2095 (YA1966.24/3/21/C/4)
1865-1867, sub-sub-sub-series