His brain was stolen
Einstein had intended to be cremated after his death, but the doctor that performed his autopsy on April 18, 1955 in Princeton, pathologist Dr. Thomas Harvey, had other plans. Having the opportunity to study the brain of one of the great geniuses of the age, he stole 2.7 pounds of Einstein’s brain, as well has his eyes, which he gave to Einstein’s eye doctor. Harvey moved the brain a number of times and cut it into a number of pieces to be stored in jars, but never got around to studying it. After 43 years, he returned to specimens to Princeton.