Paphiopedilum: Care, Culture and Tips for Growing Paphs
Pacific Horticulture | The Wild World of Orchids
Rare and Beautiful Orchids (and a Horticulturist) Find Home at Smithsonian Gardens | Smithsonian Gardens
Tropical Slipper Orchids: Paphiopedilum and Phragmipedium Species and Hybrids by Koopowitz, Harold: Near Fine Hardcover (2008) 1st Edition | Erlandson Books
The Phragmipedium kovachii story to date, with images of select forms and related species and notes on its care in captivity. — Exotica Esoterica
Tropical slipper orchids : Paphiopedilum and Phragmipedium species and hybrids : Koopowitz, Harold : Free Download, Borrow, and Streaming : Internet Archive
Tropical Slipper Orchids : Paphiopedilum and Phragmipedium Species and Hybrids by James Comstock, Harold Koopowitz and Carol Woodin (2008, Hardcover) for sale online | eBay
Paphiopedilum and Phragmipedium
Lovely and Delicate, Lady Slipper Orchids - Orchid Republic