  These are a few historical remarks, addenda and references with comments on
some topics discussed by Thurston in his notes ''The geometry and topology of
three-manifolds''. The topics are mainly hyperbolic geometry, geometric
structures, volumes of hyperbolic polyhedra and the so-called
Koebe--Andreev--Thurston theorem. I discuss in particular some works of
Lobachevsky, Andreev and Milnor, with an excursus in Dante's cosmology, based
on the insight of Pavel Florensky. The final version of this paper will appear
as a chapter in the book ''In the tradition of Thurston. III'', ed. K. Ohshika
and A. Papadopoulos, Springer Nature Switzerland, 2024.
