Fact check Ryan in the Debate

In the Vice Presidential debate Ryan said that the Kennedy tax cuts generated so much growth that tax receipts increased enough to offset the revenue losses.

When I look at the data it sure looks like this claim is another one of his Any Rand fantasies.  The economy did grow rapidly after the Kennedy tax cuts,  but the deficit remained high. throughout  the  JFK-LBJ administration.  Moreover, like Reagan, LBJ finally had to raise taxes to recover the lost revenues.