Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for London County Council]
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Map of London indicating the Location of Cases of Children suffering from
acquired Heart Disease and attending the Council's Special (P.D.) Schools
in December, 1925.
The hatched line is a contour line 50 feet above sea level. The numbers indicate the courses of
old rivers:—
1. Stamford Brook. 2. Counters Creek. 3. West Bourne. 4. Ty Bourne- 5. Hole Bourne or Fleet.
6. Wall Brook. 7. Shore Ditch. 8. Black Ditch. 0. River Lea and Hackney Brook. 10. Beverley
Brook. 11. River Wandle. 12. Falcon Brook. 13. River Effra. 14. Neckinger. 15. Ravens Bourne.
Map of London showing Distribution of Cases of Illness notified as due to
Encephalitis Lethargica, 1924-1925.
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