=Seems like Masters and Kinsey worked together or in the same circles==

https://kinseyinstitute.org/collections/archival/masters-and-johnson.php

About Masters & Johnson

In the late 1950s, Masters and Johnson pioneered research into the understanding human sexual response, dysfunction, and disorders through the direct observation of anatomical and physiological sexual responses of human subjects. They began their joint work in 1957 at the Department of Obstetrics and Gynecology at Washington University in St. Louis before founding the Reproductive Biology Research Foundation (later re-named the Masters and Johnson Institute), where they worked from 1978-1994, conducting independent sexological research and organizing training workshops for researchers, educators, and therapists.

William Masters and Virginia Johnson have been widely recognized for their contributions to sexual, psychological, and psychiatric research, particularly for their theory of a four-stage model of sexual response (also known as, the human sexual response cycle) and their study of sexual response among the elderly. Numbered among their awards are acknowledgements from the American Association of Sex Educators, Counselors and Therapists in 1978, and the American Association of Sex Educators, Counselors and Therapists in 1985 and 1992. The Society for Sex Research and Therapy grant the Masters and Johnson annual award for research.

Masters died in 2001 at the age of 85. Johnson passed away in 2013 at age 88.