Tropical Slipper Orchids: Paphiopedilum and Phragmipedium Species and Hybrids by Koopowitz, Harold: Near Fine Hardcover (2008) 1st Edition | Erlandson Books
Lovely and Delicate, Lady Slipper Orchids - Orchid Republic
Slipper Orchids of the Tropical Americas: Phillip Cribb, Christopher Purver: 9789838121750: Amazon.com: Books
Jay Vannini on Cypripedium, Phragmipedium, Mexipedium and Selenipedium in México and Central America — Exotica Esoterica