Wiki How:NRHP colors legend

This is a NRHP colors legend, providing index to colors used in Wikipedia lists and articles on sites listed in the U.S. National Register of Historic Places.

Color options address nine categories of National Park System units automatically included on the National Register. These are (using the National Park Service abbreviations): IHS, NB, NBP, NBS, NHS, NHP, NMEM, NMP, NM.^[1]

These are presented in order of rough counts of the number of each site (counts for several by quick inspection of List of areas in the United States National Park System):

Abbreviation and color	what it means	count estimate	list of sites
NRHP	National Register of Historic Places	>90,000	National Register of Historic Places listings by state
NRHP-delisted	Formerly listed on the National Register of Historic Places	1,500
HD	National Register Historic District
NHL	National Historic Landmark	2,455	List of U.S. National Historic Landmarks by state
CP	National Register Historic District Contributing Property
NHLD	National Historic Landmark District
NMON	National Monument	93	List of national monuments of the United States
NHS	National Historic Site	89	List of National Historic Sites
NMEM	National Memorial	44	List of National Memorials
NHP	National Historical Park	42	List of National Historical Parks
NB	National Battlefield	11	List of National Battlefields
NMP	National Military Park	9	List of National Military Parks
NBP	National Battlefield Park	3	List of National Battlefield Parks
NBS	National Battlefield Site	1	National Battlefield Site
NHR	National Historical Reserve	1	National Historical Reserve
IHS	International Historic Site	1	International Historic Site

^ Appendix C of the National Park Service's NHLlist PDF document, p.110

[1] Appendix C of the National Park Service's NHLlist PDF document, p.110

[1]