Atlantis expedition believed dead

[weirdredstreak]

i'm looking for any stories where the Atlantis Expedition is believed to be missing/dead- preferably from a very early point (such as never receiving any message requesting help in letters from Pegasus for some reason) and they have survived or at least some of them have. I am hoping for one where Atlantis goes to Earth to defend it from the Wraith... In particular i am interested in seeing interactions between the Expedition members and the Earthlings... Hopefully Dr Weir is still alive and in control of the city...

any suggestions??