"On the Relative Motion of the Earth and the Luminiferous Ether" (https://www.aip.org/history/gap/PDF/michelson.pdf https://www.aip.org/history/gap/PDF/michelso

"On the Relative Motion of the Earth and the Luminiferous Ether" (https://www.aip.org/history/gap/PDF/michelson.pdf https://www.aip.org/history/gap/PDF/michelson.pdf) This paper achieves a wonderful balance between being incredibly important and almost absurdly easy to read and understand.