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1. Global Map: Airports of the United States, 2014

2014. National Atlas of the United States. This point shapefile represents airports in the United States, Puerto Rico, and the Virgin Islands. This layer includes 1:1 million scale data from... National Atlas of the United States.

2. Petroleum Refineries, United States, 2014

2014. National Energy Information Center (U.S.). This point shapefile represents all operating petroleum refineries located in the United States, Puerto Rico, Guam, the U.S. Virgin Islands, and ot... National Energy Information Center (U.S.).

3. U.S. ZIP Code Points

2014. Environmental Systems Research Institute (Redlands, Calif.) and TomTom North America, Inc. This polygon shapefile represents the five-digit U.S. ZIP Code areas as points, plus all ZIP Codes that have no associated area such as a building.... Environmental Systems Research Institute (Redlands, Calif.).