History of Hip-hop
50 years of hip-hop: L.A. gives the genre KDAY and Dr. Dre - Los Angeles Times
How Seattle rap crashed the mainstream by swimming against the current
50 years of hip-hop history: Los Angeles : NPR
50 years ago, a summer party in the Bronx gave birth to hip-hop : NPR
Celebrating the Hip-Hop Pioneers of the 1990s, in Photos
Fresh, Fly, and Fabulous: Fifty Years of Hip Hop Style
50 years of hip-hop: A genre born from a backyard party : NPR
All Rap Is Local: A city-by-city guide to hip-hop's first half-century : NPR
Fresh, Fly, and Fabulous: Fifty Years of Hip Hop Style
San Francisco seniors welcome in Lunar New Year with rap track : NPR
All Rap Is Local: A city-by-city guide to hip-hop's first half-century : NPR