- American Society for the Prevention of Cruelty to Animals133
- Royal Society for the Prevention of Cruelty to Animals74
- American Society for the Prevention of Cruelty to Animals -- Legal cases25
- Bergh, Henry, 1811-188822
- Massachusetts Society for the Prevention of Cruelty to Animals11
- American Humane Education Society10
- American Humane Association9
- Buffet, Edward P. (Edward Payson), 1873-19302
- Fernandez, Angel2
- Lopez, Isaac2
- New York (N.Y.). Office of the Mayor2
- Vivisection Investigation League2
- Westminster Kennel Club. Dog Show2
- American Kennel Club1
- American Veterinary Medical Association1
- Brooklyn Daily Eagle (Firm)1
- Elizabeth II, Queen of Great Britain, 1926-1
- Ely, Smith, 1825-19111
- Grace, William Russell, 1832-19041
- Illinois Humane Society1