NPR: National Public Radio
Npr: Week of August 1 2016: Panetta Calls Trump's Russia Comment 'Inconceivable'
Former CIA Director Leon Panetta blasted Donald Trump Wednesday night from the stage of the Democratic National Convention, calling his recent comment that Russia should "find" Hillary Clinton's emails "irresponsible" and "inconceivable."
PBS
Pbs News Hour: Retrospective on the 1968 Democratic Convention
A brief summary looking back at the Democratic Convention. Follow the link to Terry Southern's piece for a first person account from 1968.
Other
Copernicus Election Watch: History of the Parties
This site has a great timeline that tracks the history of the Democratic, Republican, and some Independent Third Parties. Also some excellent links at the bottom of the page.