Aaron, Thomas J. (Green Earth Nursery)
Jacksonville, FL - Vandaceous/ Cattleya/ Oncidiinae/ Culture /or Modern Breeding; Creating Pods and Growing Orchids from Seed; Others
Irvine, CA - Various Technical and Non-technical subjects
Atwood, Debra (Napa Valley Orchids)
Napa Valley, CA - Reading your roots,Things I wish I had known in the beginning, Others
Aybar, Manuel (Manny)
Garland, TX - Various - see webpage for details
Barkalow, Ray (First Rays Orchids)
Buckingham, PA - Semi-Hydroponic Culture
San Bernardino, CA - California's native orchids, What's in a name? Darwin's sexy orchids, Others
Cash, Hadley (Marriott Orchids)
North Carolina - Complex Paphs and Pink/White Breeding
Clarke, Fred (Sunset Valley Orchids)
California - Cycnoches, Mormodes, Catasetums, Paphs, Catts, Culture & More!
Decker, Glen (Piping Rock Orchids)
New York - Phragmipediums, "Phragmipedium kovachii - A Peruvian Jungle Adventure"
Gemeinhart, Ernie (EnLightened Orchids)
Orlando, FL - Paphs, Growing Under Lights, Record Keeping
San Mateo, CA - Masdevallias, Orchid Trip to Borneo, Brazil: Orchid Conservation
State College, PA - Various orchd related lectures
Goldner, William (Woodstream Orchids)
Huntingtown, MD - Various Topics - Tropical
Hatfield, George (Hatfield Orchids)
Ventura, CA - Cymbidium propagation, classification, culture and care
Hersh, Helen (Mount Prospect Orchids)
Brooklyn, NY - Paphs & Phrags, Bulbophylums, Advanced Windowsill Growing
Winnipeg, MB - Orchids of Thailand; Orchids, Whales & Polar Bears; Orchids of the Prairie Provinces & British Columbia
San Jose, CA - Long Lasting & Frequent Blooming Orchids Species, The Wonderful Colors of Neofinetia Hybrids, The Most Awarded Epidendrum Species, Potting Orchids in Coconut Mixes, 20th WOC
Lin, Peter T.
Southern California - Minicatts: Miniature Cattleyas of Yesterday and Today; Miniature Orchid Species: Tiny Wonders of the Orchid World
Mathis, William (The Wild Orchid Company)
Doylestown, PA - Gardening with Hardy Terrestrial Orchids
Michel, Erich (Michel Orchid Nursery)
Mooresville, IN - Various orchd related lectures
Moskovitz, Larry (Orchidanica)
Oakland, CA - Brazilian Species, Laelias, Orchids in Hawaii, Bizarre Species, NG Dendrobs!
South San Francisco, CA - Various orchid species-related talks.
Rach, Nina M. (Autre Vie Orchids)
Houston, TX - Stanhopeas and Allied Genera; Sobralias!; Orchids of the Gran Sabana; Orchid habitats in eastern & southern Africa; Arachnis; Eulophia; et al.
Riley, Clark T.
Baltimore, MD - Cypripediums, Terrestrials, Taxonomy!
Roberts, Wayne (Roberts Flower Supply)
Columbia Station, OH - Potting Materials, Cypripediums & Native American Orchids, Non Lethal Pest And Fungus Control, Growing Under Lights!
Sotirov, Krum Z.
Watertown, New York - expert on orchids pest and diseases, care for unknown orchids, adaptation period care for newly acquired orchid.
Storm, Paul (Meke Aloha Orchids)
Sarasota, FL - Schomburgkias, Myrmecophilas, and their Hybrids
Stubbings, John (Clown Alley Orchids)
Pasedena, TX - Orchid Growing, Phalenopsis, Unusual Relatives of Cymbidiums
Turkel, Marni (Stony Point Ceramic Design)
Santa Rosa, CA - Lesser Known Oncidiinae; Looking for Orchids in Peru, More!
Voytilla, Thomas (The Orchid House)
Green Bay, VA - Experienced growing and culture of orchids in semi-hydroponics
Whitlow, Carson E. (Cyp. Haven)
Adel, IA - Cypripediums, Calopogons, Blue Cattleya History, More!
Wilhelm, Rolf & Linda (Woodland Orchids)
Charlotte, NC - Oncidum Intergenerics, Mexican Adventure, More!