When Bill and Virginia Marry, it's supposed to be in late 1969, as Woodstock had just ended. In reality, William Masters and Virginia Johnson were married in 1971.
In 1969, the year depicted here, Libby Masters is seen leaving with her two adolescent children, ages 9 and 13. In reality, the Masters' children were born in 1950 and 1951, making both of the adults at ages 18 and 19 in 1969.