- For information on using this template, refer to Wikipedia:Route diagram template.
- For pictograms used, see Wikipedia:Route diagram template/Catalog of pictograms.
- Official Map of London Overground
- Official TfL tunnels map
- Detailed London transport map (track, depot, …) at cartometro
- TfL toilets-map for 🚻 toilets symbol
- National Library of Scotland maps used for track elevation, published 1962
- Template:Chingford branch line RDT
- Template:London Overground East London Line
- Template:Gospel Oak to Barking Line
- Template:Lea Valley Lines RDT
- Template:North London Line
- Template:Romford–Upminster line RDT
- Template:Watford DC line
- Template:West London Orbital RDT
- Template:West London Line