The New Christy Minstrels throughout its run. After the group toured Europe in early 1965, McGuire left to embark on a solo career, and this spelled the end of the original New Christy Minstrels. Now under the direction of Greif and Garris the group moved towards a variety act, doing "novelty and pop tunes" and a little comedy, making them closer to the 19th century Christy's Minstrels from whom the group's name was derived. Reflecting this shift, they had a "Billboard" Top 100 hit later in 1965 with a cover of "Chim Chim Cher-ee" from the Disney film "Mary Poppins". Regular group membership changes
Robert Yerkes observe chimps on his own. He began by purchasing two chimpanzees, Chim and Panzee, from a zoo. He brought the two chimps home, where they lived in a bedroom and ate with a fork at a miniature table. Chim was a particular delight for Yerkes, and the summer that chimp and psychologist spent together is memorialized in "Almost Human" (1924). In 1924, Yerkes was hired as a professor of psychobiology, a field he pioneered, at Yale University. He founded the Yale University Laboratories of Primate Biology in New Haven, followed by his Anthropoid Breeding and Experiment Station in Orange Park,