Part of a Nepalese folding sketchbook depicting the sixty-four Yoginīs (numbered from 1–64), and a few images of Mahiṣāsuramardinī.
(Seen with Sam Fogg Rare Books and Manuscripts, London, present location unkown. View all of the scanned images here).
The images appear to be no more than schemas intended to record significant details such as the number and disposition of the arms and heads, the arrangement of the āyudhas, stance, etc. As such it was presumably used by a Karmācārya ritualist.