Key points are not available for this paper at this time.
Neutral hydrogen mapping of 70 dwarf irregular (Sm, Im, and BCD) galaxies is reported, with position-velocity contour maps (and a few contour maps in R.A. and decl.) presented for those resolved by the Arecibo beam. The galaxies were selected either from the Virgo Cluster Catalog, from similarly identified field galaxies, or from a distance- limited sample within the Arecibo declination range. We do not find any isolated dwarfs with a larger H I to optical radius ratio than DDO 154; the "protogalaxy" H I 1225+01 of Giovanelli in a companion paper we combine these data with those for the set of all available mapped dwarf irregular galaxies and for mapped spirals spanning a similar range of redshifts to investigate variations in Tully-Fisher relations and in surface densities as functions of galaxy size and luminosity or mass.
Hoffman et al. (Thu,) studied this question.