⁸³« By 1929 he had radial velocities and independent distance determinations for twenty-four galaxies, and he published a graph of the velocities (up to 1,100 km/sec) as a function of distance (up to 2x10⁶ parsecs, or a little over 6x10⁶ light years). » HOSKIN, The Cambridge concise history of astronomy, p. 303.