In article , leslie wrote:

It was over Lake Washington; this site includes some photos shot from
the Dash-80 during the rolls:

On August 7, 1955, Alvin M. "Tex" Johnston stuns the crowd at the
Seafair Gold Cup hydroplane race on Lake Washington by barrel (or
aileron) rolling the prototype Dash-80, the precursor to the Boeing
707, thus launching the era of the modern commercial jet.

Is someone going to roll a 367-80 over Lake Washington on August 7, 2005
to properly commemorate the 50th anniversary of that event?

-Dan