A mother porcupine and her quilled offspring share a quiet moment on the floor of their enclosure in this official Zoological Society of London postcard — one of a series of animal-portrait cards sold at Regent's Park around the turn of the century. The undivided back places the card in the zoo's earliest wave of souvenir photography, and the tender mother-and-young subject sets it apart from the more typical single-animal shots in the series.

• Caption: "No. 14. — Porcupine and Young."
• Photographer: D. Seth-Smith
• Publisher: Zoological Society of London, Regent's Park, N.W.
• Status: Unposted