"Anyone who visited his home would spend hours in there; it was like a museum," said Ms. Hopkins. "He had old glass-fronted cabinets full of artifacts, rocks and things."
Much of Dr. Money's collection now sits in a gallery in the town of Gore, New Zealand, in a wing named after him.
A collection of Dr. Money's professional writings is housed at the library of the Kinsey Institute for Research in Sex, Gender and Reproduction at Indiana University. Liana Zhou, head of the library, said both Dr. Money and Dr. Alfred Kinsey were trailblazers in sexual behavior research.
Although he lived alone most of his life - he was married but quickly divorced in the 1950s and had no children - Dr. Money entertained friends and kept in touch with a large extended family that includes eight nieces and nephews and "hundreds of relatives in New Zealand," Ms. Hopkins said.
Until the end, it was clear his greatest love was research, she said. Dr. Money chronicled his battle with Parkinson's, and the beginnings of dementia, in his signature way.
"He used to write about the experience of dying from Parkinson's and dementia and what it was like on the inside," Ms. Hopkins said. "He was always collating, identifying and cataloging things his whole life. I was amazed that there was still something inside him that wanted to teach people."
Family and friends are planning a memorial service for September. Dr. Money made arrangements to have his body donated to the Maryland Anatomy Board.