Sources list for IRA BERLIN'S ARTICLE TIME SPACE AND THE EVOLUTION OF AFRO AMERICAN SOCIETY:

Mayo, James M. The American Grocery Store: The Business Evolution of an Architectural Space. Connecticut: Greenwood Press, 1993.
The Supermarket Industry

Mayo, James M. 1993. The American Grocery Store: The Business Evolution of an Architectural Space. Greenwood Press: Westport, CT.
Starbucks' Coffee Shops

Berlin, Ira. Many Thousands Gone, The first two centuries of Slavery. The Belknap Press of Harvard University Press. Massachusetts. 1998
Ira Berlin’s "Many Thousands Gone"

Berlin, Ira and Barbara J. Fields. (1992). Free at Last: A Documentary History of Slavery, Freedom, and the Civil War. New York: New York Press.
Leadership in "Glory"

Mayr, Ernst. What Evolution Is. New York: Basic Books, 2001. (A basic work on the underlying principles of evolution and its scientific worth).
Evolution and Religion