I recently found this excellent Dealey Plaza image (via a Facebook
acquaintance), which is a picture I've been trying to place a date on:
https://2.bp.blogspot.com/-BATVtpoU9q0/WV-pEeXwzVI/AAAAAAABMTM/t3a7J997i0ULRJmkO35IWl4_owro2sZMgCLcBGAs/s5000/Dealey-Plaza-Dallas-Texas-Circa-Early-1960s.jpg
The person I got that photo from had a "1963" date attached to it, which
cannot possibly be accurate, because the TSBD building still has the
"Sexton Quality Foods" logos in place on the west side of the building
(7th floor). And it ceased being "The Sexton Building" sometime in 1961.
Plus, none of the three large high-rise buildings that were under
construction on 11/22/63 are anywhere to be seen in that photo. So I
determined it had to be taken prior to late '61, but later than 1959
(because in another pic I have from '59, the Hertz sign is not yet on top
of the TSBD).
If anyone spots any clues as to when that particular photograph might have
been taken, please let me know. At the present time, I'm captioning that
picture on one of my websites with a label of "Circa 1960", which is about
the best I can do without knowing the precise date.
An oddity in that photo is the fact that we find the "Old Charter"
billboard in that picture, which (I assume) is the very same billboard
that was still there on 11/22/63 (seen in the Mel McIntire photo [top link
below] taken near Stemmons). That seems odd, because billboards are
usually changed around quite often.
http://kennedy-photos.blogspot.com/2012/06/kennedy-gallery-043.html
http://dvp-video-audio-archive.blogspot.com/2017/07/dealey-plaza-videos-and-photos.html