Tuella (Thelma Terrell, d. 1993) channeled Ashtar Command as well as other sources who speak on "behalf of the entire Space Confederation and the Council of Universal Masters who serve the Divine Government" at assemblies of Galactic Federation Councils.
Here one of them, Xyletron, distills the message they send through Tuella: "Earth - as a playground and educational institution - is closing down for a period. After a cleansing and remodeling has transpired, it will be reopened, but with a greater curriculum and staff to challenge the eager students of life into more preparations for even greater horizons that will challenge them after graduation. After successful preparations, those returning to Earth will know the Universal Laws and be prepared to live in harmony with them."
Quotes from Tuella
"In this day the UFO movement has grown into a higher plateau of understanding and awareness. In the opening experiences of the movement there was an emphasis upon a few who had outstanding revelations and stories to tell, which was the necessary approach for the times. Now the approach is through the strivings of the soul in an [ethereal] sense rather than a phusical sense. This is why sightings in general have lessened so drastically, along with hostility of your sky patrols. The nature of the experiences of the early fifties was needful for the awakening and attention-getting maneurvers to fulfill the mission of that day. The seed remained to sprout anew in your day, but on a higher level of manifestation. The thusands of cosmic telepathic contacts of this day would have been impossible without the forerunner activities of the earlier days. The spiritual contactiee is now proving a thousand times more effective in the enfolding of light and understanding in the quiet ways than the exploited physical contactees of the past ever could be. Now the changes are coming from within and working outward rather than the former process in reverse."
Quotes About Tuella
"Prolific ... "Tuella the 'space name' assigned to her by the Ashtar Command, an inter-galactic fleet that has allegedly been circling us in outer space for millennia." 
"Learn what you can about the presence of foreign forces in the world." 
- Project World Evacuation: UFOs To Assist in the Great Exodus of Human Souls Off This Planet
- Purported "messages from 'Commander Ashtar, the highest in authority of our hemisphere,' and from such other formidable sounding crew members as Hatonn, Lord Kuthumi, Monka and Andromeda Rex." (Ruth Montgomery, Aliens Among Us, p. 43)
- "chief import ... most earthlings will lose their physical lives when the earth shifts on its axis at the close of this [20th] century, a goodly number of enlightened ones will be evacuated by the galactic fleets and returned to earth for its rehabilitation."
- Quotes from Project World Evacuation:
- Andromeda Rex: "The Great Evacuation will come upon the world very suddenly. The flash of emergency events will be as the lightning that flashes in the sky. Our rescue ships will be able to come in close enough in the twinkling of an eye to set the lifting beams in operation in a moment. Mankind will be lifted, levitated shall we say, by the beams from our smaller ships. These smaller craft will in turn taxi the persons to the larger ships overhead, higher in the atmosphere, where there is ample space and quarters and supplies for millions of people."  (as quoted in Ruth Montgomery, Aliens Among Us, p. 43)
- Project World Evacuation: UFOs To Assist in the Great Exodus of Human Souls Off This Planet, 1993:
- Secrets of the Father's Little Book, collected writings previously published as the newsletter, The Throne Connection
- On Earth Assignment: The Cosmic Awakening of Light Workers, Walk-Ins & All Star-Born Representatives, 1994
- Cosmic Prophecies for the Year 2000: A Channeled Symposium on What We Can Expect for the Rest of the Decade, 1994
- Cosmic Telepathy: A How-To Guide To Mental Telepathy, 2003
- Ashtar: Revealing the Secret Identity of the Forces of Light and Their Spiritual Program for Earth: Channeled Messages From The Ashtar Command The Space Brotherhood , 2011
- A New Book of Revelations - A Harvesting Of Souls At Earth's Final Moment, 2012
- "Who Is Tuella?"
- Project World Evacuation
- quoted in Ruth Montgomery. Aliens Among Us, pp. 44- 45 (bracket in Montgomery)
- Ruth Montgomery. Aliens Among Us.
- Marshall Vian Summers. Guidelines for Preparing for the Greater Community, 2008