These are freakishly rare.
Walker, H. Kenneth, W. Dallas Hall, and J. Willis Hurst. "Clinical methods." 3rd edition.(1990).Chapter 60 Cranial Nerves III, IV, and VI: The Oculomotor, Trochlear, and Abducens Nerves - by J. Donald Fite and H. Kenneth Walker.
Twenty five years out of date, but still relevant.
These authors, in turn, reference even more ancient vellum:
Leigh RJ, Zee DS. The neurology of eye movements. Philadelphia: FA Davis, 1983.
Miller NR. Walsh and Hoyt's clinical neuro-ophthalmology. Vol 2. 4th ed. Baltimore: Williams and Wilkins, 1985.