• W. McKim (1900)- kill institutionalized hereditary defectives, including retarded, epileptics, alcoholics, and burglars
• G. F. Lydston (1906) - sterilize unfit and gas to death "the driveling imbecile."
• G. S. Hall (1910s)- denounced efforts to save "moribund sick, defectives, and criminals, because by aiding them to survive it interferes with the process of wholesome natural selection"
• E. W. Lee (1915)- "extermination" of dependent defectives; criminals, the insane and idiots should be "eradicated."

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