Familiar Faces in Dealey Plaza

[Frank Caplett]

David Atlee Phillips, aka Maurice Bishop, was Lee Harvey Oswald's CIA handler.

According to Larry Hancock, researcher Gary Buell and David Phillips' nephew, Shawn Phillips, had an email exchange. As Shawn described in the email, Shawn's father, James Phillips, became aware that his brother, David, had in some way been "seriously involved" in the JFK assassination. James and David argued about this vigorously and it resulted in a silent hiatus between them that lasted for almost six years.

As David was dying of lung cancer he called his brother. James asked David pointedly "Were you in Dallas that day?" David answered, "Yes," and James hung up the phone on him.

So, are there photographs of Dealey Plaza in which a David Atlee Phillips lookalike can be spotted?
If not, why not?
Was Phillips in disguise?
Was Phillips in Dallas but not in Dealey Plaza? Perhaps in HL Hunt's office?
Was he in one of the many photographs that were confiscated?

Good work, but I would like to see Shawn Phillips say this on video or at a conference.