The White House website has great pictures - though not as good as what you post on the Dose! (I know some come from there - but not all. The White House ones don't give as many closeups as we see on the Dose...but some are still good!)
(This one is from last year: "President George W. Bush and Laura Bush observe a moment of silence after laying flowers at the fountain by the entrance of Arlington National Cemetery May 28, 2001. ")