Full titles: 大坪併治 1968 訓点資料の研究 and 門前正彦 1968 立本寺蔵妙法蓮華経古点 (the latter is also digitally available @ https://t.co/JZ9ELr3GXj). This practice goes further back, at least into the 1950s (see e.g. 中田祝夫 1954-58 古点本の国語学的研究, esp. the 訳文篇). 5/