Currently the #LesbianHistoricMotifProject is focusing on books and articles about the legal context of lesbianism (in preparation for a podcast on the topic). Here's another publication by legal scholar Caroline Derry this time analyzing the famous Pirie & Woods case.
The Legal Framework of Pirie & Woods | Alpennia
This article fits in well with the question of what the actual legal issues are when lesbianism is part of the context of a legal case. When you dig into it, the central usefulness of Pirie & Woods vs Cumming Gordon is not what it says about whether two specific women had a lesbian relationship, but rather the amount of detail it provides about legal and social attitudes