Mr. BALL. Now, on that same day, did you do anything more? Mr. POTTS. Let me say--later on in the afternoon--we worked the rest of that night, up until--I don't recall what time I did leave there--it was pretty late. Mr. BALL. I have here a document which has been marked as "Commission Exhibit No. 426." Did you find this document at the 1026 North Beckley address that day, do you remember? Mr. POTTS. I recall seeing this; yes, I do. I don't know which one of the officers picked it up. Mr. BALL. Do you remember where it was? Mr. POTTS. No; I don't. Mr. BALL. Do--you don't know where it was kept? Mr. POTTS. No, sir. Mr. BALL. But was it brought from the room? Mr. POTTS. Yes; it was--here's my initial in the right hand corner, and here is Mr. Moore's. Mr. BALL. What does that initial mean? Mr. POTTS. That's my initial, "W. E. P." Mr. BALL. And there is "11-22-63"--what does that mean? Mr. POTTS. That means--we initial all of the evidence we bring out of there. At the time--this was going to court, and if this was brought out in court that would be my initials right there--I recovered this. Mr. BALL. Did you initial it right there in the room? Mr. POTTS. We initialed it after we brought it to the station. Mr. BALL. These are the initials of the men who were there with you? Mr. POTTS. That's H. M. Moore and I guess it's F. M. Turner--"F. M. T."--that's my partner. Yes, sir; for the purpose of identification in court, we initialed everything we could possibly write on. Mr. BALL. Now, did you, on the 23d of November, take part in the investigation of either the death of Oswald or the shooting of the President? Mr. POTTS. Well, I reported to work at 10 o'clock in the morning and we worked until midnight that night--it was mostly telephone conversations--they had to put extra phones in our office. We were swamped--I talked to people from England, Canada, Peru--all over was just calling in there--just a continual call--call--call--and it kept most of us real busy answering telephone calls that day. Mr. BALL. Did you take part in any showup of Oswald? Mr. POTTS. I believe I did--was that the 23d--at 2:15 that afternoon on the 23d, I was in on one. Mr. BALL. Who was with you? Mr. POTTS. Mr. Senkel and I went to the jail and stood by the jail elevator and waited until the showup came down, and I was thinking there was M. G. Hall and Charlie Brown and a jailer or two that brought that showup down. They were all handcuffed together, as I recall. Mr. BALL. Who is M. G. Hall? Mr. POTTS. He is a detective in our bureau. Mr. BALL. And who is Charlie Brown? Mr. POTTS. Charlie Brown is also an officer assigned to the bureau. Now, I might be wrong about that, but it seems to me like they were the two that showed up then, but they might not have been. Mr. BALL. Now, did you have anything to do with the selection of the men who were to be in the showup?