There’s something quite wonderful and yet a bit poignant about documenting the passage of time on a regular basis for over thirty years. “For more than three decades, documentary photographer Nicholas Nixon has captured the Brown Sisters — his wife Bebe and her sisters Heather, Mimi and Laurie — in a series of moody photos that go beyond your typical family portrait.” Read more and see photos here. The link includes a slide show of the Kinsella family, who also take annual photos, and a further link to a group of friends who are photographed every five years.