I'd like to have a sermon collection gleaned from:
as many as possible, of course.
I'm getting a "404 Not Found" on your second link.
fixed
In Stockholm they've celebrated it by -- quite accidentally -- digging up what they are almost sure is a corner of the Medieval Dominican church. The archaeologists are quite excited. Parts of the convent cellars still stand, but the exact location of the church hasn't been known. Not bad for an anniversary gift. [:)]
That is a great way to celebrate. Most of us have to be satisfied with a Mass in the Dominican rite.