The “angel of the meeting”

I learned from Bill Taber in a Pendle Hill class that, through the 18th and much of the 19th centuries, many Friends believed that each meeting had its angel. They got this idea from the second and third chapters of the Book of Revelation. Some ministers, especially when they had been invited (or sent) to a meeting to help sort out some difficulty, would ask to meet with the meeting in worship before talking to anyone so that they could try to commune with the angel of the meeting about the problem first. Ever since learning this, I’ve tried to commune with the angels of the meetings I’ve visited and I’ve had three such experiences, one of them quite intense.

Does anyone know more about the history and theology of this practice? Has anyone else tried this? Had any success? Or has anyone had such an experience spontaneously?