Fritz Klein, “Sur uine certain famillie de courbes et de surfaces (en commun avec S. Lie)”, in Comptes Rendus…, 1870, vol 70, pp 1222 and 1275. The two weekly issues, removed from a larger bound volume. Nice copies. A classic paper in the developing field of non-Euclidean geometries. SOLD
- Referenced in Hans Wussing, The Genesis of the Abstract Group Concept: A Contribution to the History of Mathematics…”; Thomas Hawkins, “Emergence of the Theory of Lie Groups: An Essay in the History of Mathematics…”; and David E. Rowe, John McCleary, “Ideas and Their Reception: Proceedings of the Symposium on the History of Mathematics…”