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THE CITY 
WASHINGTON 
jDDDQiaacM^i 
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SHOWING 
LOCATION OF RESIDENCES 
CASES OF TYPHOID FEVER 
CASES HAVING DEFINITE ONSET 
CASES HAVING DEFINITE ONSET , 
TWO OR MORE DOTS OR CROSSES IN A SINGLE 
CIRCLE INDICATE TWO OR MORE CASES IN THE 
SAME HOUSE. 
BULLETIN 35, HYGIENIC LABORATORY, P. H. & M. H, S. 
