- 1General arrangement drawing no 9560 (YA1966.24/3/21/C/3/773/1)
1863, item - 2General arrangement drawing no 11879 (YA1966.24/3/21/C/3/773/2)
1863, item - 3General arrangement drawing no 15403 (YA1966.24/3/21/C/6/2383)
1869, item - 4General arrangement drawing no 28656 (YA1966.24/3/21/C/13/3808)
1879, item - 5Metropolitan Railway Electrification (YA1996.1132)
1923, item - 6Photograph album no. 13 (EE/1/13)
n.d., item - 7Engineering drawings for orders recorded in Order Book No 7, numbers 2346-2572 (YA1966.24/3/21/C/6)
1869-1871, sub-sub-sub-series - 8Engineering drawings for orders recorded in Order Book No 13, numbers 3341-3500 (YA1966.24/3/21/C/11)
1875-1876, sub-sub-sub-series - 9Engineering drawings for orders recorded in Order Book No 16, numbers 3679-3821 (YA1966.24/3/21/C/13)
1878-1879, sub-sub-sub-series