Harlem: the unmaking of a ghetto
"Photographs and television documentaries about Harlem parades convinced me to attend the African American Day Parade along Adam Clayton Powell Jr. Boulevard. The event attracts groups as diverse as the Masons, the Black Panther Party, and members of the hospital unions. I saw Elks and Masons marching past, wearing black suits with aprons similar to those in fashion seventy years ago, like those that can be seen in Harlem on My Mind the companion catalog to a controversial 1969 Met exhibition on Harlem's history)."
Harlem: the unmaking of a ghetto, Camilo José Vergara. Chicago : The University of Chicago Press, 2013. ISBN : 978-0-226-85336-9. p. 255.