Drawings by Rank Strand Electric Ltd and its earlier entity Strand Electric and Engineering Co Ltd, who organised them into the following series:
WR (1 drawing): Proposed master system panel layout
1A: Dimmer room and auxiliary pin matrix (Upper Theatre), playback panel, control room layout (Lower Theatre) and termination box
1D (1 drawing): Cue reply panel
1S (1 drawing): Termination box
JH: Palette mimics
VHG: Playback and settings panels
There are a number of drawings and sketches with their details incomplete or missing, meaning they have no titles, dates and/or reference numbers.