The American Mathematical Monthly
A conference, workshop or journal: the thing that recurs, across all its years.
The Mathematical Association of America's monthly, written for mathematicians generally rather than for specialists. Its articles are expository by design, so it is where a clean account of a classical result usually lives.
https://www.tandfonline.com/journals/uamm20
3 references
The unreasonable effectiveness of mathematics
Richard Wesley Hamming (1980) · The American Mathematical Monthly
History of the parallel postulate
Florence P. Lewis (1920) · The American Mathematical Monthly
Non-Euclidean Geometry
George Bruce Halsted (1900) · The American Mathematical Monthly