In our original paper, the parameters for the best-fit model SEDs in Table 3 and the derived mass ratio of the total of submicron-sized grains listed in Table 4 were incorrectly quoted. For comet C/1995 O1 (Hale-Bopp), for the four epochs UT 1996 September/October (rh=2.8 AU), 1997 February (rh=1.21 AU), 1997 April (rh=0.93 AU), and 1997 June (rh=1.7 AU), the SED model fits shown respectively in Figures 6-9 utilize Np(crystalline olivine) larger than that quoted in Table 3 of the original paper. We have corrected this error in the revised Table 3 given here. This error was propagated into Table 4, which also used incorrect uniform bulk densities for all minerals in deriving the ratios of submicron grain abundances. A corrected Table 4 is given below, using the corrected bulk density of rhoC=2.5 g cm-3 for carbon grains and of rhoSi=3.3 g cm-3 for silicate grains, and taking into account that the submicron amorphous carbon and amorphous silicate grains are porous (model parameter D