( 1) Aerial photograph
AP (J.K.S. St. Joseph. Udtd AHB 20) (In A.O Album)
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( 2) General reference
APs (RAF 106G/UK 1431 16.4.46 7216-7)
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( 3) General reference
Linc. Record Soc. 19, 1924, lxxiv, lxxxix (C.W. Foster)
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( 4) Field Investigators Comments
F1 FRH 18-JUN-65
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( 5) General reference
DMV's 1971 194 (M Beresford & J G Hurst)
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( 6) Field Investigators Comments
F2 AJT 24-AUG-77
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(7) General reference
Helen Winton/13-FEB-1996/RCHME: Lincolnshire NMP
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