3C 273: a Starlike Object with Large Redshift, plus 3 other related papers in Nature 197, 1963. p. 1040
1963. 1st Edition. FIRST EDITION OF THE FIRST OBSERVATION OF A QUASAR. While studying the light spectra of radio sources at the California Institute of Technology, Maarten Schmidt identified the visible object corresponding to a radio source known as 3C 273. Though its star-like appearance suggested it was relatively nearby..... More