I toured the stacks which are now empty - see this entry about the stack system.
After some refreshments and schmoozing with various people there were a bunch of speeches about the project and how long it had taken to get to this point. There were issues of the program within, the location, the siting, the effect on the park, and the design which were covered by two different committees (I was a member of both).
One of the speakers pointed out that when she lived in France and later in Italy there were no public libraries. Her point was that with a library and a hardware store you can do anything and figure out to do it yourself. She said that in Italy her observation was that people only did something if someone showed them how. We can thank Andrew Carnegie for his vision about libraries and backing it up with the funds to build them (1946 of them in the US).
Then we went outside for a talk by Charles Sullivan - the Cambridge Historical Commission guru about the history of this building. The land and the funds for it were given by Frederick Rindge who also gave money for the building of the Technical HIgh School and for the City Hall. It was originally built in ~1895 and several augmentations were done soon after. In 1967 an ugly addition was added. This project removes that addition to give more space to the adjacent highschool and restores the nice wall that is covered up, generally restores the old building and adds a large glass walled extension on the East Side to yield about 100,000 sq ft as opposed to 35K now.
click for some pics that show the front of the old building, the connection to the 1967 addition, some dignitaries digging, a piece of a stone frieze that was on the old Latin School and was placed in the grass and now sprouts weeds, and the empty stacks .