In The Walking Dead season 3 episode 12 "Clear", Carl risks his life to get a picture of his deceased mother from the local watering hole. He describes it as the last surviving picture of Lori, and he wants his sister Judith to know what her mom looked like.
Back in season 1, we know that Lori took her family photos with her when she was evacuated. In fact, Rick knew that his family left their house safely because all of their family albums were missing. When Rick and Lori are reunited again, they share a moment where they browse through those photos.
So sometime between these two incidents the photos were either destroyed or misplaced.
I can't remember, but were we ever shown what happened to the old Grimes family albums?