My initial intent was simply to try to get a grouping of the supposed shooting teams, but if we must jump ahead to physical evidence of other shooters there is this
Among the files released by the Assassination Records Review Board (ARRB) was an FBI evidence envelope (FBI Field Office Dallas 89-43-1A-122). Although the envelope was empty, the cover indicated it had contained a 7.65 mm rifle shell that had been found in Dealey Plaza after the shooting. The envelope is dated December 2,1963.
Other documents released by the ARRB discuss a Johnson semi-automatic 30.06 rifle that was apparently found in Dealey Plaza soon after the shooting. The documents strongly link this rifle to two men who have long been suspected of being involved in the assassination plot, Loran Hall and Jerry Patrick Hemming. This rifle was used in CIA-connected anti-Castro raids in Cuba. Loran Hall and an unidentified Hispanic man took the weapon about a week before the assassination. Hall?s associate, Jerry Hemming, is known to have been in Dallas on the day of the shooting, and Hall himself told Hathcock, the CA owner of the rifle, five days prior to the assassination that he had to catch a flight to Dallas (HSCA 180-10107-10440).
In 1975 a maintenance man named Morgan, while working on the roof of the County Records Building in Dealey Plaza, found a 30.06 shell casing lying under a lip of roofing tar at the base of the roof?s parapet on the side facing the plaza, according to his son, Dean Morgan. The shell casing is dated 1953 and marks on it indicate it was made at the Twin Cities Arsenal. One side of the casing has been pitted by exposure to the weather, suggesting that it was exposed on the roof for some time. The casing, which is still in Morgan?s possession, has an odd crimp around its neck (Marrs 317; Roberts 80-81).
A bullet apparently struck the south Main Street curb in Dealey Plaza during the shooting. It landed about 25 feet from James Tague (who was cut on the face by a concrete fragment), who was standing next to the triple underpass. The bullet made a visible scar in the curb, and the mark was immediately recognized by those who saw it as a fresh bullet mark.
Dallas policeman J. W. Foster, who was positioned on top of the triple underpass, saw a bullet strike the grass on the south side of Elm Street near a manhole cover, about 350 feet from the TSBD. He reported this to a superior officer and was instructed to guard the area (Shaw and Harris 72-75; Marrs 315).
An unidentified blond-haired man in a suit was photographed bending down, reaching out his left hand toward the dug-out point on the ground as if to pick up something, standing back up, apparently holding a small object in his hand, and then putting his hand in his pocket (Shaw and Harris 73-74). The hole made by the bullet was even photographed, and the picture appeared in the Fort Worth Star-Telegram on 11/23/63. Contemporary press accounts reported that a bullet was retrieved from the dug-out hole in the grass near the manhole cover (Fort Worth Star-Telegram and Dallas Times Herald).
In the photos taken of this event, one can see Officer Foster and a civilian-clothed Deputy Sheriff Buddy Walthers standing over the spot where the bullet landed, along with the unidentified man in the suit. Dallas police chief Jesse Curry believed the man was an FBI agent. The identity of the blond-haired man is unknown, the recovered bullet was never entered into evidence, and its present whereabouts are not known.
Officer Foster also reported that a bullet struck the concrete part of the above-mentioned manhole cover (near where the bullet struck the grass). About two and a half hours after the shooting, Dealey Plaza witness John Martin came across the mark on the manhole cover concrete (Trask 573). Researchers have noted that the photo of the mark indicates it did NOT come from the TSBD, but that it does line up with the County Records Building (where a 30.06 rifle shell casing was years later found on the roof).