From the posts on the Gym Chat Chalk Talk thread
Mary Lou's bars routine from the '84 Olympics
[youtube]SPwokPNMpCE [/youtube]
[youtube]9LaZ6O2aVqk[/youtube]
Nadia's bar routing from '79
[youtube]M55LwYOutEM[/youtube]
and from Montreal '76 Olympics, compulsory bars
[youtube]OvNWOj1CFrE[/youtube]