OREGON HISTORICAL TOPOGRAPHIC MAPS: FIFTEEN MINUTE SERIES, 1897 TO 1974
(2) = Number following quadrangle name in parentheses provides total number of printings for that quad.
C of E = U.S. Army Corps of Engineers as cartographer and/or publisher.
(P) = Planimetric = map representing only the horizontal positions of features (and not the vertical positions, like heights, which a topographic map shows).
"2 copies" = 2 copies: Indicates the Map & Aerial Photography Library has two printings with identical dates: 1 with green screen and 1 without.
Cut-over screen = indicates logging
Logged-off screen = indicates logging
Needed = Not found in the University of Oregon Map & Aerial Photography Library.
Reprint = a later printing of the same map edition.
In the Printing Dates column, 19xx w/19yy means that the map was has a handwritten note of the first year while the second is the printed edition year.
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