Jon, my original question/point was to address the claim that Oswald was impersonated at the Soviet Embassy, in fact that he never went to Mexico City at all. I think the evidence is persuasive that he did go there. Why would the Soviets cover up or withhold this impersonation? What would be the reason?
No one can answer your question because it's a Strawman argument given that no one is arguing that the real Oswald didn't visit the Soviet embassy.
The popular claim is that Oswald was impersonated in
phone calls to the Soviet embassy, not in person.
I referenced the Simpich and Summers quotes because I thought maybe you're confusing the Cuban and Soviet embassy stories. There are claims that the person who visited the Cuban consulate in MC wasn't the real Oswald but I haven't seen similar claims made about his visit to the Soviet embassy.
Do we know as an established fact that someone impersonated Oswald on one or more occasions during his Mexico City trip? No. But there are valid reasons to speculate that someone might've impersonated him.
As to the tapes/phone calls: As Rudd said in his cable, the tapes had been erased. There were none. Why would they be kept? We have the transcripts and there's nothing of importance to keep. Why keep these when the usual procedure was to erase them? This was 1963, the tapes were huge devices. I think Coleman and Slawson's accounts - which have been contradictory, e.g. Coleman said on one occasion he heard no tapes and on another he did, same with Slawson - that they heard tapes is wrong.
Whether the people who claimed the tapes existed after 11/22/63 were mistaken or not (and there were others who claimed that the tapes were listened to after the assassination besides the two you mentioned), there's other evidence that suggests that the person on the phone calls wasn't the real Oswald and that Silvia Duran may have been impersonated as well:
In two telephone calls to the Soviet Embassy, a man claiming to be Lee Harvey Oswald spoke “terrible, hardly recognizable Russian”, according to the CIA’s translator. Oswald himself spoke Russian very well.
The man who made the incriminating phone call to Kostikov had also phoned from the Cuban Consulate three days earlier, on Saturday 28 September. In this instance, not only was Oswald impersonated but the phone call or the transcript appear to have been fabricated. The Cuban Consulate and the switchboard at the Soviet Embassy were closed on Saturdays. Silvia Durán, an employee at the Cuban Consulate, who was mentioned by name on the transcript, denied that she had taken part in the call on the 28th. http://22november1963.org.uk/a-little-incident-in-mexico-cityThe CIA translator also claimed that the person claiming to be Oswald spoke broken English:
The phone caller spoke broken Russian and broken English, and knew that Oswald was in transition but not that he was moving away from his familyhttps://www.maryferrell.org/pages/State_Secret_Chapter5.htmlPrimary source -
https://www.maryferrell.org/showDoc.html?docId=50273#relPageId=5As to Simpich and the Cuban consulate: Nowhere does Lopez mention in his report this CIA source's account. How would a CIA source know this? According to the Cubans there were only four people who were aware of the visit: Azcue, Duran, Mirabal and reportedly Teresa Proenza, the Cuban Cultural Attache who supposedly directed Oswald to Duran when he entered the consulate). Who else would know that some person identified himself as Oswald? Duran, who spent the most time with him, said it was Oswald (yes, she got his height wrong). The physical evidence - photos and signatures - are of Oswald's. He told the Soviets he went there. So we have Azcue saying it wasn't Oswald (he also said the photos were not of the man he met?) and all of this other evidence?
Duran's claim was that she never saw Oswald again after September 27, 1963. Therefore, if Oswald returned to the Cuban embassy on the 28th and she helped him call the Soviet embassy from the Cuban embassy (as the 9/28/63 wiretap transcript describes), then either she lied or someone was impersonating her.
The last call in question was made on October 1.
As to an impersonation: If one did occur on a phone call how does that show a conspiracy in the assassination? I don't see a connection.
If someone was attempting to frame Oswald as potentially conspiring with the Soviets or Cubans weeks prior to 11/22/63, that would be hard evidence of a conspiracy plot. Hence why LBJ tried to bury the Mexico City stuff about the Cubans (I'm aware that the story about his visit to the Soviet embassy wasn't buried).
The possibility that Oswald might've been impersonated at the Cuban embassy could be why the Cuba stuff was covered up.
I don't think the Sylvia Odio thing can be dismissed either (did the real Oswald visit her? Or an impersonator?).
Put another way, if Oswald was simply a "lone-nut", why would anyone go through the trouble of trying to impersonate him (in person or on phone calls)? What would be the non-conspiratorial explanation if it's true that he was impersonated?
We really don't know enough about that week of Oswald's life to draw any concrete conclusions...