I have in fact read everything he ever, well, published, anyway, except the poetry, and most of his posthumously published letters and journals, as well as most of the secondary literature, and I also highly recommend him. However, I am going to stop here and not post further without the express permission of a moderator, because a very recent Merton thread attracted an unfortunate dialogue with people who wanted to do something other than find the good in him.
I hope and have to believe that he is happy with God in heaven, but in terms of canonization he is not by modern standards a likely candidate, a situation I will not elaborate on for the aforementioned reason. Anyone is welcome to pm me, for I love discussing Thomas Merton.
There is a current anthology of Catholic mystical writing that I found in the library the other day. I was frozen to pieces from having walked two miles from the car service center on the coldest day of the year in upstate New York, but when I get back I will check it out (I mean literally). It has many ancient classics, but also includes something from Merton’s modern classic “New Seeds of Contemplation.”