- 1General arrangement drawing no 2777 (YA1966.24/3/21/C/1/225)
1857, item - 2General arrangement drawing no 3755 (YA1966.24/3/21/C/2/324)
1858, item - 3General arrangement drawing no 9149 (YA1966.24/3/21/C/3/774)
1863, item - 4General arrangement drawing no 11700 (YA1966.24/3/21/C/4/961)
1865, item - 5General arrangement drawing no 18108 (YA1966.24/3/21/C/7/2632)
1871, item - 6General arrangement drawing no 34288 (YA1966.24/3/21/C/16/6254)
1882, item - 7Engineering drawings for orders recorded in Order Book No 1, numbers 1-258 (YA1966.24/3/21/C/1)
sub-sub-sub-series - 8Engineering drawings for orders recorded in Order Book No 2, numbers 259-555 (YA1966.24/3/21/C/2)
1858-1861, sub-sub-sub-series - 9Engineering drawings for orders recorded in Order Book No 4, numbers 849-2095 (YA1966.24/3/21/C/4)
1865-1867, sub-sub-sub-series - 10Engineering drawings for orders recorded in Order Book No 8, numbers 2573-2771 (YA1966.24/3/21/C/7)
1870-1871, sub-sub-sub-series - 11Engineering drawings for orders recorded in Order Book No 19, numbers 6152-6285 (YA1966.24/3/21/C/16)
1881-1882, sub-sub-sub-series