An Inventory of the Historical Monuments in Middlesex. Originally published by His Majesty's Stationery Office, London, 1937.
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'Plate 139: Harrow on the Hill Church', in An Inventory of the Historical Monuments in Middlesex(London, 1937), British History Online https://prod.british-history.ac.uk/rchme/middx/plate-139 [accessed 19 April 2025].
'Plate 139: Harrow on the Hill Church', in An Inventory of the Historical Monuments in Middlesex(London, 1937), British History Online, accessed April 19, 2025, https://prod.british-history.ac.uk/rchme/middx/plate-139.
"Plate 139: Harrow on the Hill Church". An Inventory of the Historical Monuments in Middlesex. (London, 1937), British History Online. Web. 19 April 2025. https://prod.british-history.ac.uk/rchme/middx/plate-139.
Harrow on the Hill Church.

Roof of Nave. 15th-century.