I’ve been reading some history of philosophy of law lately so I’ve added positivists like John Austin, Hans Kelsen, and HLA Hart, along with sentences on natural law by Aquinas, as a start. (More to come, incl. Fuller, Finnis, Dworkin, Raz.) Here for Hart:
https://www.denizcemonduygu.com/philo/browse/#per=herbert_lionel_adolphus_hart