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DEPARTMENT OF THE INTERIOR ALBERT 8 FA LL. SECRETARY

U . S . GEOLOGICAL SURVEY GEORGE OTIS SMITH , DIRECTO R

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C. H. B1rd seye, Chiel Top9g raphic Engmeer

T. G. Gerd ne, Oiv'V 'O" Topograph1c Engineer Topography by K. W. T rll\1b le

Surveyed 1n I 21

SURVEVEO IN CQOPE.RATION W ITH TH E SOUTHERN CAUFY RNIA EDISON COMPAN Y

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PLAN AND

COLORADO RIVER, LEES FERRY. ARI SAN JUAN RIVER. MOUTH TO CHINLE C

0 GR E E N R IV ER: UTAH ; AND CERTAI N TR IBUTARIES

APPROXIMATE MEAN DECLINATION 1921

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KEY MAP OF PLAN SHEETS

Subject to adj ustment

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SHEET 0

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22 SHEETS

(16 plans. 6 profdes )

Printed 1922