  Measurements of the linear diameters of 12 nearby spiral galaxies with
distances determined from primary indicators suggest that both the Milky Way
Galaxy and M31 are in the middle of the range of sizes for such galaxies. By
comparing the measured linear diameters of these nearby systems with the
inferred diameters of a sample of more than 3000 spirals with known redshifts,
we conclude that the most likely value of the Hubble Parameter lies in the
range 50 - 55 km/s Mpc^{-1}.
