Leeds and Harrogate Line, Leeds Wortley Junction to Pannal Junction
Tapton Junction (Chesterfield) to Colne, Masborough to Colne
Engineer's Line References (ELRs): A (Hopefully) Comprehensive Listing
Railway Codes and Other Data: A (Hopefully) Comprehensive Listing
Network Rail FOI response 27 May 2022: ReferenceLines shapefile
Network Rail FoI response 27 January 2016: Geographical Information on TIPLOCs