Lemaître's Hubble relationship
arXiv:1104.3031 · doi:10.1063/PT.3.1194
Abstract
Edwin Hubble is often credited with discovering the expanding Universe based on spectra taken by him. This statement is incorrect and we feel that it is the responsibility of those who are aware of the historical facts to set the record straight.
3 page letter, more accurately reflects letter published in Physics Today, August 2011