Triangles


  1. ^ a b c d Whitehouse & Thomas 1987, p. 67.
  2. ^ Pixton 2000, p. 48.
  • Pixton, Bob (2000). North Midland: Portrait of a Famous Route - Part One - Derby to Chesterfield. Cheltenham: Runpast. ISBN 978-1-870754-47-7.
  • Whitehouse, P. B.; Thomas, David St. John (1987). LMS 150 : the London Midland & Scottish Railway : a century and a half of progress. Newton Abbot: David & Charles. ISBN 0-7153-8740-5. OCLC 25832543.