1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).
theymos said the 3rd post contained his address and name and was deleted.
No. To be honest, theymos said
"it must have contained", which means he was just speculating. And those were topics, not posts.
By the way, that research of yours is bullshit, IMHO.