The book is called Religion in America Since 1945, written by Patrick Allitt. Interestingly, Morningland did not make it into the chapter on New Religions or Cults, but on page 248, focusing on the Millenial expectation and the End Days. I assume this was the most outstanding or outlandish information about Morningland or Sri Donato available to Mr Allitt at that time (he probably did not visit the website).
Millenialists who decided to stay in America also envisioned great changes, sometimes through the instrumentality of UFOs. A California sect, Mornignland, believed that a flying saucer “as big as Texas” would bring Christ to Long Beach, California.” Its leader, Sri Patricia, claimed that she could foresee the future and that she could transform people’s DNA with a wave of the hand, thereby (among other things) curing AIDS.”
Morningland was listed as a Millennialism group. For those who may not be familiar with the term:
Millennialism, also called millenarianism or chiliasm, the belief, expressed in the book of Revelation to John, the last book of the New Testament, that Christ will establish a 1,000-year reign of the saints on earth (the millennium) before the Last Judgment. More broadly defined, it is a cross-cultural concept grounded in the expectation of a time of supernatural peace and abundance on earth” (Britannica, 2023)
Screenshot from the book: