1960's:
NFL:
East:
Capital: Dallas, New York, Philadelphia and Washington.
Century: Cleveland, New Orleans, Pittsburgh and Saint Louis.
West:
Central: Chicago, Detroit, Green Bay and Minnesota
Coastal: Atlanta, Baltimore, Los Angeles and San Francisco.
AFL:
East: Boston, Buffalo, Houston, Miami and New York.
West: Cincinnati, Denver, Kansas City, Oakland and San Diego.
Revisionist history:
NFL:
East:
Capital: Baltimore, New York, Philadelphia and Washington.
Century: Atlanta, Cleveland, Detroit and Pittsburgh.
West:
Central: Chicago, Green Bay, Minnesota and Saint Louis.
Coastal: Dallas, Los Angeles, New Orleans and San Francisco.
AFL:
East: Boston, Buffalo, Cincinnati, Miami and New York.
West: Denver, Houston, Kansas City, Oakland and San Diego.
1970's NFC:
East: Dallas, New York, Philadelphia, Saint Louis and Washington.
Central: Chicago, Detroit, Green Bay, Minnesota and Tampa Bay.
West: Atlanta, Los Angeles, New Orleans and San Francisco.
Revisionist history:
East: Atlanta, New York, Philadelphia, Tampa Bay and Washington.
Central: Chicago, Detroit, Green Bay, Minnesota and Saint Louis.
West: Dallas, Los Angeles, New Orleans and San Francisco.
1990's NFL:
AFC:
East: Buffalo, Indianapolis, Miami, New England and New York.
Central: Baltimore, Cincinnati, Jacksonville, Pittsburgh and Tennessee.
West: Denver, Kansas City, Oakland, San Diego and Seattle.
NFC:
East: Arizona, Dallas, New York, Philadelphia and Washington.
Central: Chicago, Detroit, Green Bay, Minnesota and Tampa Bay.
West: Atlanta, Carolina, New Orleans, Saint louis and San Francisco.
Revisionist history:
AFC:
East: Baltimore, Jacksonville, Miami, New England and New York.
Central: Buffalo, Cincinnati, Indianapolis, Pittsburgh and Tennessee.
West: Denver, Kansas City, Oakland, San Diego and Seattle.
NFC:
East: Carolina, New York, Philadelphia, Tampa Bay and Washington.
Central: Atlanta, Chicago, Detroit, Green Bay and Minnesota.
West: Arizona, Dallas, New Orleans, Saint Louis and San Francisco.
Today:
The only changes that i would make:
AFC:
East: Baltimore, Buffalo, New England and New York.
North: Cincinnati, Cleveland, Indianapolis and Pittsburgh.
South: Houston, Jacksonville, Miami and Tennessee.
NFC:
East: Carolina, New York, Philadelphia and Washington.
South: Atlanta, Dallas, New Orleans and Tampa Bay.