in this form.
Federal Power Commission, National Power Survey, "Cost of Distribution of Electrkily," l'J35 SCALE .5
B. Essential Parts of a Complete Electric Power System.
1. In this diagram of the essential parts of a complete electric power system, a hypothetical
land lay-out is used, since the important point is to include the information in the smallest possible space.
2. An attempt was made in this drawing to give the effect of a "bird's-eye view"
GRAPHIC PRESENTATION
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RELIEF AND AERIAL MAPS
N.-ition;.! Rc^ourrri Board. -State Hlaiiiimi; 1 '7 t -. SCALE .7
Bird's-Eye View of the Passamoquoddy Tidal Power Project in the State of Maine.
1. This is an example of a pictorial map suggesting contours and character of the region
represented.
2. For popular presentation, this combines the qualities of the pictorial and relief types
of map.
GRAPHIC PRESENTATION
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A Map Drawn on Azimu+hal Projection with New York as the Central Point.
RELIEF AND AERIAL MAPS
WPA. Division of Social Research. "Landlord and Tenant on the Cotton Plantation." 1936. SCALE .7