Performers active
- Professor D.M. Bristol in BEASTS
- Alice Doherty aka Minnesota Woolly Baby in Hairy Folk
- Jack Earle in FREAKS, in Giants
- Ernie & Len aka Ernie Conklin, aka Ernie Defort in FREAKS, in Extra Limbs, in Parasitic Twins
- Lya Graf in FREAKS, in Unusual Size, in Little People, Midgets, Dwarves
- William Heckler in Flea Circus
- Jean and Jacques Libbera aka La Birra, aka "Double-Bodied Wonder" in FREAKS, in Extra Limbs, in Twins, in Parasitic Twins
- Annie Jones aka "Infant Esau" in FREAKS, in Bearded Ladies
- Laloo aka Laloo Ramparsad, aka Lalloo, aka "Double Hindoo Boy", aka "Brother and Sister In One Body" in FREAKS, in Extra Limbs, in Twins, in Parasitic Twins
- Alfred Langevin aka The Eye-Smoker in Strange Talents, in WORKING ACTS, in NOVELTY AND VARIETY
- Human Fly Launtz in Acrobats, in Daredevils, in Equilibrists
- Carl Lauther
- Forrest Layman in FREAKS, in Armless
- Millie-Christine McKoy aka "The Carolina Twins", aka "The Two-Headed Nightingale", aka "The Eighth Wonder of the World", aka "The Renowned Two Headed Lady" in FREAKS, in Twins, in Conjoined Twins
- Jennifer Quigley in FREAKS, in Unusual Size, in Little People, Midgets, Dwarves
- Angelo Rossitto aka "Little Angie" in FREAKS, in Unusual Size, in Little People, Midgets, Dwarves
- Soopromanien Munsamy aka "The Singhalese Pigmy" in FREAKS, in Unusual Size, in Little People, Midgets, Dwarves
- Tocci Brothers aka Giovanni Tocci & Giacomo Tocci in FREAKS, in Conjoined Twins, in Siamese Twins
- "The Great Waldo" aka Dagobert Roehmann, aka Dagmar Rothman in Regurgitators
- Jas. H. Wallick aka James H. Wallick in BEASTS, in Horses, in Trained Animals
- Zelmo "Trainer of Pigeons" in FEATS, in BEASTS