If you haven't seen it already, I would recommend "The Chosen"! The first episode of Season 2 can be viewed by clicking here!
The 1901 Jewish Encyclopedia
These files are public domain.
Singer, Isidore, Ph.D, Projector and Managing Editor. Entry for 'Onycha'. 1901 The Jewish Encyclopedia. https://www.studylight.org/encyclopedias/eng/tje/o/onycha.html. 1901.