House of Mirth asked collectors of vernacular photos/snapshots to share their favorite specimens in the "silhouette" category. The subject of Joel Rotenberg's contribution above left reminds me of William S. Burroughs! Snapshot above right is from the collection of Nigel Maister. "Silhouettes in Photographs"
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.