- 1General arrangement drawing no 2321 (YA1966.24/3/21/C/1/145)
1857, item - 2General arrangement drawing no 3438 (YA1966.24/3/21/C/2/291)
1858, item - 3General arrangement drawing no 3933 (YA1966.24/3/21/C/2/309)
1858, item - 4General arrangement drawing no 8604 (YA1966.24/3/21/C/3/704)
1863, item - 5General arrangement drawing no 14614 (YA1966.24/3/21/C/5/2268)
1868, item - 6General arrangement drawing no 25847 (YA1966.24/3/21/C/12/3589)
1877, item - 7General arrangement drawing no 26104 (YA1966.24/3/21/C/12/3588/1)
1877, item - 8General arrangement drawing no 26104[1] (YA1966.24/3/21/C/12/3588/2)
1877, item - 9General arrangement drawing no 26323 (YA1966.24/3/21/C/12/3648)
1877, item - 10General arrangement drawing no 26328 (YA1966.24/3/21/C/12/3647)
1877, item - 11General arrangement drawing no 29639 (YA1966.24/3/21/C/14/3876)
1880, item - 12General arrangement drawing no 45072 (YA1966.24/3/21/C/24/7172)
1889, item - 13General arrangement drawing no 47667 (YA1966.24/3/21/C/26/7442)
1891, item - 14Engineering drawings for orders recorded in Order Book No 1, numbers 1-258 (YA1966.24/3/21/C/1)
sub-sub-sub-series - 15Engineering drawings for orders recorded in Order Book No 2, numbers 259-555 (YA1966.24/3/21/C/2)
1858-1861, sub-sub-sub-series