The Levite Camp was considered a Public Area for rules of transport on Shabbat: Shabbat 96b
Why the Jews would look after Moshe when he was returning to his tent: Kiddushin 33b
Rabbah bar bar Chanah declared that he had seen the area where the Jews camped by the Jordan, and it was no larger than three parasangs by three parasangs: Eruvin 55b
Which spot the Jews chose to use for toilet areas, behind them, to the side or in front of them: Eruvin 55b
The clouds surrounding the camp, as a result of Aaron's merit: Taanit 9a