This series consists of nine volumes of post-war blues recordings from Chicago, Detroit, Memphis and the Delta, New Orleans and the Southwest.

In 1979, Nighthawk expanded by launching the 200 series of blues productions with Mule, an album by Henry Townsend.

In the 1980s, Nighthawk became a predominantly conscious roots reggae label before going out of business in the late 1990s.

The 300 series began in 1980 with Wiser Dread, an anthology of Rastafarian roots music recorded between 1972 and 1978.

"[citation needed] Since then Nighthawk released a self-produced album by The Morwells of some of their singles and three volumes of Nighthawk's own Jamaican productions: Brutal Out Deh by the Itals, Symbol of Reality by the Gladiators and Calling Rastafari featuring Culture, the Itals, the Gladiators, Wailing Souls and Mighty Diamonds.