z161 from Zapruder film plus view from sniper's nest taken from reenactment.
Zapruder / FBI
1963
Image can be found at <a rel="nofollow" class="external free" href="http://www.history-matters.com/archive/archive_holdings.htm">http://www.history-matters.com/archive/archive_holdings.htm</a> Originated from the report of the Warren Commission a US Government report. From WH Vol.18 p.86