I came across the website of Unity Publishing Inc. recently.
I really enjoy reading the different articles of the site regarding Marian apparitions.
I highly recommend the article “Testing the spirit --- the criteria of discernment”
There are articles of investigations on different reported apparitions.
Very informative site!
The Very Reverend Adolphe Tanquerey wrote about “Rules for the Discernment of Revelations” in his classic, The Spiritual Life. The articles at Unity Publishing Inc. help me to understand the writings of Tanquerey with concrete applications.