Author:
johnny_automatic
Third set of 4 sets of map pictographs for U.S. national park maps. PD US Government - National Park Service, U.S. Dept. of the Interior
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\nrest of sets:
\nhttp://openclipart.org/media/files/johnny_automatic/6741
\nhttp://openclipart.org/media/files/johnny_automatic/6754
\nhttp://openclipart.org/media/files/johnny_automatic/6765
License:
Public Domain. Free for editorial, educational, commercial, and/or personal projects. No attribution required.
More info.