Ordnance Survey, scale 1:2500, 1907, Norfolk Sheet XXXVIII N.W., second edition, surveyed in 1884, revised 1904-05. Includes parts of Salle and Hackford
Thurning, Ordnance Survey, 1906, second edition, surveyed in 1885, revised in 1905, scale 1:2500, ref. Norfolk Sheet XXVII 5, showing Thurning Hall and church.