aepoint: Locations of airports in Puerto Rico (Geographic coordinate system, Clarke 1866 spheroid) 

dnnet: Drainage network (Geographic coordinate system, Clarke 1866 spheroid)

hynet: Hydrography network (Geographic coordinate system, Clarke 1866 spheroid)

pricopo: Political boundaries (Geographic coordinate system, Clarke 1866 spheroid)

rdline: Roads (Geographic coordinate system, Clarke 1866 spheroid)

rrline: Railroads (Geographic coordinate system, Clarke 1866 spheroid)

utmcov: This zip file contains the above eight (8) coverages projected in UTM Zone 20, WGS84 
datum, WGS84 spheroid.  

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31 dec 99