I've got some thoughts on the topic, but haven't been able to marshal them in an orderly fashion. Happily, there are others picking up the slack:
Mary remembers her brother.
Searchie attends And I Still See Their Faces: The Vanished World of Polish Jews and recalls a visit to Tykocin — manifold remembrance.
Pattie serves up a pointed reminder.
And this excerpt from Danielle Trussoni's memoir Falling Through The Earth has lodged itself in my consciousness and disrupted many a predictable surge in its waters. Favorite quote: "I was grateful that my father had made the videotape. It was a record of my childhood free of the distortions of memory. The tape helped me to see that many of my recollections had been colored by love and anger — that I had often made my father in the image of my emotions." Emphasis mine, because boy-howdy: this father knows his soon-to-be-grown daughters will most certainly subject their childhoods to the distortions of memory.