A couple of snips from the interview of Vincent Drain in “No More Silence” by Larry Sneed:
This is apparently what Drain was talking about in his September 1964 report when he refers to Carl Day’s instructions to turn over all the evidence [that was requested] in CE 3145:
Earlier in the evening [11/22/63], about 8:00 o’clock, the division chief had talked to me on the telephone and informed me that the FBI in Washington demanded that we bring to them for examination the rifle, the revolver that was used to kill Tippit, as well as the different paraphernalia such as identification cards and other small items that Oswald had on him. I discussed it with the police chief and told him that we’d keep the chain of evidence intact and that I would pick them up there myself and wait for them until they were examined in Washington then bring them back. So it was turned over to us.
It wasn’t until after LHO was murdered that the FBI requested all of the evidence. Here is another snip from the Vincent Drain section of “No More Silence” by Larry Sneed:
The next day I was the representative of the FBI at Tippit’s funeral. I remember riding back from the cemetery in the Oak Cliff section of Dallas to the police department with a newspaperman named Jerry O’Leary of the Washington Star. As we were talking and listening to the radio, Waggoner Carr, who was the attorney general of Texas at the time, said that he was going to open up a hearing himself. Put it this way: There was quite a bit of competition at that time between the police department, the local district attorney’s office, and the Texas attorney general. As a result, after Oswald was killed, the FBI wanted to get all of the evidence and have it brought back to Washington because I think they wanted to preserve it for posterity’s sake.