PORTSMOUTH, N.H. (AP) — A self-guided walking tour about black heritage in Portsmouth is now part of a newly formed statewide nonprofit group.

The site is now part of the Black Heritage Trail of New Hampshire. Launched last year, the organization is supported by 50 volunteers. Their mission is to tell the little-known stories about blacks in New Hampshire. The Black Heritage Trail of New Hampshire offers a variety of programs beginning each year in February.

To date 27 Portsmouth sites have been marked with permanent brass plaques that present the city's history through the eyes of enslaved, freed, and contemporary black citizens.