Reference

Package
snappoly	snappoly: Common SNAP geographic polygon units in SpatialPolygonsDataFrame format.
Basic metadata
snappolys()	Basic metadata for all data sets in snappoly
Data sets
alaska	State of Alaska.
canada	Canadian provinces.
ecoreg	Alaska ecological regions (ecoregions).
aklcc	Alaska Landscape Conservation Cooperative.
lcc	Alaska and Canada Landscape Conservation Cooperative.
cavm	Circumpolar Arctic Vegetation (Alaska).
fmz	Alaska Fire Service fire management zones.
tpa	Terrestrial protected areas.