Citations
TB: RTC [Cook Reversible Transit Circle] drawings, 1957 and 1977-1980, GBR/0180/RGO 101/1/TB, Box 19: RGO 101/1/TB/Y-Z, TC/Y-Z, TD/Z; Tube 94: RGO 101/1/TB/W & X. Cambridge University Library. |
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TB: RTC [Cook Reversible Transit Circle] drawings, 1957 and 1977-1980, GBR/0180/RGO 101/1/TB, Box 19: RGO 101/1/TB/Y-Z, TC/Y-Z, TD/Z; Tube 94: RGO 101/1/TB/W & X. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1496260 Accessed September 19, 2024. |