He visited "a number of additional Medical Schools and Scientific Institutions...[to collect] material for comparative neurological study." He also collected a shrunken head, allegedly from the Jivaro ...

They include an early 18th-century "shrunken head" of the Jivaro people -- from Ecuador and Peru -- that had been owned by ...

It has also withdrawn other pieces from its planned “curious collector” sale, including shrunken heads from the Jivaro people ...