Oh, I want to share this breviary story here too:
When I decided to return to Christ (after a period of separation in my young adulthood), I started praying the office using an old 1955 breviary I had once picked up in a used bookstore (at the time, just because it was in Latin, which I thought was cool, and out of a general curiosity for liturgical minutiae–which, along with a lot of help from divinumofficium.com, is what later enabled me to figure out how to use the book correctly in the first place.)
This breviary had belonged to a diocesan priest, which I could tell because his name was written on the inside cover, and his address, which was crossed out and re-written in as he moved from parish to parish in the course of his career.
So, when I emotionally started praying the office again–the day I decided to become a Catholic again–and it came time to turn to the proprium de tempore for the first time (to read the prayer of the day), I discovered that, this breviary not having enough ribbons, the page was marked by a prayer card–so worn and thin that I hadn’t known it was in the book before–on that very day. This priest had stopped praying his office on the exact day that I took it up again!
I cannot even describe the chills that went up my spine as I thought of how incalculably improbable that was. That that old breviary should find its way, more than fifty years later, into the hands of someone who would even be able to use it to pray, and that the very day that person should experience a new conversion and take up the (olim) prayer of the Church, should be the same day when the priest who had used it for years and years ceased to do so… mirabilia opera tua, Domine!