I would suggest having someone go through the old HxHD forums to see if screenshots are posted there. Beyond that, there is some sleuthing to be done because sometimes policies were changed effecting layout - for example, the majestic on rollers in the screenshot of my room was changed to a stationary one with the policy of "if you're gone for >30 minutes it doesn't count as active time and you should leave the help desk and return."
Also if you can find the old ban threads (though they may be in a SS forum / Management forum that was moved to the archives in reorganizations of the HxHD forum) I'm sure that there are tons of screenshots, you just have to blank out the naughtiness.
Picture 1) I have a screenshot of that layout from 6/25/07, though given how notorious I was for not changing layouts I'm not sure how much help that is :P
2) Spectate, DJ, Hayley.Girl (aka Angel-Light) and =Steph=04 in there, though you already have the date, that pic was definitely taken later.
7) Think that's the relaunch of HxHD in Jan of 09. Definitely @
Sammeth.'s room though.
8) Check the release date of penguins. That particular layout was shortly thereafter.