1. Furness Iron: The Physical Remains of the Iron Industry and Related Woodland Industries of Furness and Southern Lakeland, 2013, p. 77
2. Thorne, James. Rambles by Rivers: The Duddon, The Mole, The Adur, Arun, And Wey, The Lea, The Dove. London: Charles Knight & Co., Ludgate Street, 1844, p. 28.
3. Yoshikawa, Saeko. “A Guide that does not Guide: The Duddon Sonnets as a Guide to the Lakes.” Paper presented at 42nd Wordsworth Summer Conference held at Ryda1 Hall, Cumbria, UK, on the 11th of August 2013.
4. Dickinson, Maggie B. “Bridges of Cumbria County,” Cumbria, September 2010, p. 15-19
5. Ring Cairns to Reservoirs: Archaeological Discoveries in the Duddon Valley, Cumbria. (R2R) Duddon Valley Local History Group, 2009, p. 36
6. Hindle, Paul. Roads & Tracks of the Lake District, Cicerone Press, Milnthorpe, Cumbria, 1998, p. 123
7. Dickinson, Maggie B. “Drunk in charge of a packhorse,” Cumbria, November 2016, p. 13-17
8. Windermere Reflections: Fulling Mills In Easedale, Grasmere, Elterwater, Great Langdale And Graythwaite. Oxford Archaeology North, 2012, p. 35
9. R2R, p. 68
10. Email from Maggie B. Dickinson to Jenifer Morrissey, 4/27/21
11. Gambles, Robert. The Story of the Lakeland Dales. West Sussex: Phillimore & Co., 1997, p. 79
12. Furness Iron, p. 11
13. The locations of mines, quarries and drifts on the map come primarily from Ring Cairns to Reservoirs.
14. R2R, p. 62-4
15. R2R, p. 69
16. R2R, p. 11
17. Furness Iron, p. 6
18. R2R, p. 68
19. R2R, p. 64
20. Plate from the 1842 book Rambles by Rivers of the headwaters of the Duddon near Wrynose Pass
21. Pepper, John. Cockley Beck: A Celebration of Lakeland in Winter. Dorset: Element Books, Ltd., 1984, p. 83
22. Hartwell, Michael. An Illustrated Guide to the Packhorse Bridges of the Lake District. Earnest Press, 1994, p. 93
23. Gambles, p. 73
24. Hartwell, p. 91
25. Goodwin, Harry. “Cockley Beck, on the River Duddon, Cumberland,” published by Swan Sonnenschein and Co, Paternoster Square, London, 1890. Found at http://www.lakesguides.co.uk/html/lgaz/lk02532.htm
26. Thorne, p. 12
27. Gambles, Robert. Echoes of Old Lakeland. Carlisle: Bookcase Books, 2010, p. 151
28. Hindle, p. 144
29. R2R, p. 10
30. Gambles, Echoes, p. 159
31. Victorian Ordnance Survey 6 inch to 1 mile Old Map (1888-1913) at https://www.archiuk.com/
32. Hartwell, p. 100
33. Birks Bridge as illustrated in Wild Lakeland by MacKenzie MacBride and illustrated by Alfred Heaton Cooper, published 1922-28 and found at http://www.lakesguides.co.uk/html/topics/packbrgf.htm
34. Ross, David. “Birks Bridge, Duddon Valley,” at britainexpress.com
35. Davies, Hunter. A Walk Around the Lakes. Arrow Books, 1989. p. 68. ISBN 0099504804
36. Furness Iron, p. 6
37. Furness Iron, p. 12
38. Old Cumbria Gazetteer re Seathwaite Bridge, http://www.lakesguides.co.uk/html/lgaz/lk10227.htm
39. R2R, p. 27
40. R2R, p. 62
41. Thorne, p.28
42. Thorne, p. 28
43. R2R, p. 10
44. Email from Kerry Harvey-Piper to Jenifer Morrissey, 5/21/21
45. Hall Bridge in 1890. Photograph by Herbert Bell. Found at http://www.lakesguides.co.uk/html/lgaz/lk13011.htm
46. Johnstone, John. Sylvan’s Pictorial to the English Lakes, as cited at http://www.pastpresented.ukart.com/eskdale/sylvan.htm
47. R2R, p. 11
48. Dickinson, Maggie B. “What Lies Beneath,” Cumbria, October 2016, p. 19
49. http://www.lakesguides.co.uk/html/lgaz/lk01089.htm
50. R2R, p. 13
51. Mullen, Adrian. “Walk: Lower Duddon and Frith Hall with John Edmondson,” The Mail, “2/1/19
52. Gambles, Story of the Lakeland Dales, p. 79
53. R2R, p.67
54. Dickinson, What Lies Beneath, p. 18-19
55. R2R, p. 36-7
56. R2R, p. 69
57. Email from Maggie B. Dickinson to Jenifer Morrissey, 4/27/21
58. Furness Iron, p. 38
59. http://www.dowerhouse.biz/
60. Gambles, Story of the Lakeland Dales, p. 73