The Glass Archive is a scale model replica of the archives of Crystal Palace. It is a building within a building, located inside of the Dim Liturgy's primary monastery.
Compared to Crystal Palace, it is tiny: hallways in the Glass Archive would have been massive avenues in the city-sized original. The text on its glass panes is in minuscule font, perhaps size 4 or even smaller. Many of the panes have cracks running through them or parts that are foggy and difficult to read; some are sun-damaged and some have faded over time.
The Glass Archive does have a glass index that functions similarly to a card catalogue, but also a much easier to read breakdown of the different divisions of the Archive.[1]