Here we go... I can't seem to find half of them, but this ought to give you an idea:
edit: okay, I messed up, and I can't seem to edit the pics part of this post... but the order is wrong.
The bottom pic should be the first one - the new joists had just been put in, with the new beam, but the old joists aren't out, yet.
If anyone remembers the thread where I posted pictures of filtch plate beams? That would be the same beam, installed, in these pics.
I can't find the earlier pics, which shows all the staging they had to put in, in order to replace the beam. It was similar to what you see on the second floor, in the top pic - but twice over, once on each side of the beam.
Next, the top pic, where they'd started filling in the new section. The first set of staging has been replaced with staging under the beam, which is starting to come out, being replaced with the built-up posts that went into the loadbearing wall.
Then the middle pic.
Sorry, don't have pics of anything later.