1. Geological Survey Map, New Series, 1-inch, Sheet 4 (London District, Drift).
2. Ordnance Maps, 6-inch, Kent, Sheets 11 S.E. and S.W.
3. A Revision of our Lower Tertiaries;Harris;Proc. Geol. Assoc.,1887
4. Excursion to Plumstead Heath and Bostall;Goodchild;Proc. Geol. Assoc.,1888
5. Excursion to East Wickham and Bostall Heath;Leach;Proc. Geol. Assoc.,1906