Purple appeared to have other things to do. He eventually parted ways after Clark and him talked some more. Since Clark's group had full permission to be within the city and move around as anyone else, there was no reason for them to need a citizen of the city moving around with them. Therefore, Clark and the group headed on their way.
It was a quick moment before they split up to gather what they needed. Everyone knew what they would need individually and as a group. Clark ended up with the respective task to gather the needed books for everyone. It seemed small, but when he managed to make his way toward the Terra city archive building, he found himself at a loss.
Records were important for any city. Libraries, knowledge stores, and archives all had a lot of value. The reason that the Terra City archives were very important were simple, they had records of many underground cave systems. But they also had many other things.