Electron density analysis of Hartree-Fock wave functions has been largely limited to closed shell systems to date since unrestricted HF wave functions (UHF) are spin contaminated. Spin-projection techniques have been shown to annihilate these spin contaminations successfully. The authors have developed methods for the electron and spin density analysis of projected UHF density matrices of radicals without and with the inclusion of annihilation of the largest spin contaminant via spin projection. In this presentation, electron and spin density functions determined at the UHF and PUHF levels are compared for variety of radicals and differences in their topological and integrated properties are discussed. Methyl and allyl radical are discussed to graphically illustrate the effects of spin annihilation. Representative series of simply binary radicals of first and second row atoms, XH{sub n}, of substituted methyl radicals, CH{sub 2}X, and of selected aza-and oxo-analogues of allyl radical have been considered and trends are discussed. While topological parameters and integrated properties of the electron density differ only very slightly, the authors have found that spin populations determined at the UHF and PUHF levels differ significantly. Comparisons also are made with higher level CASSCF data.