The many similarities between gravitational and electromagnetic fields suggest that they may be characterized by a single (super) source function. A complex vector source is found to yield the correct interaction strengths (the scalar products of these vectors) for the classical inverse-square law forces between electrically charged masses. The real vector component has the magnitude of the coulomb charge of the body. The magnitude of the imaginary vector component is given by the mass of the body renormalized in units of charge. Complex vector charges (CVC), for the classical electron, proton, and neutron are developed. Appropriate sums of these vectors represent the atoms. Substitution of CVC for coulomb (scalar) charge in Maxwell's equations generates two separable sets of equations: the real component set, characterizing electromagnetic fields; and the imaginary component set, characterizing gravitational fields. The imaginary electric field represents the Newtonian gravitational field, whereas the imaginary magnetic field results in motional gravitational forces similar to those found in general relativity theory. Such forces would result in the gradual alignment of planetary orbits and spins. Acceleration of CVC generates (classical) complex radiation fields, that is, positive-energy photons and negative-energy gravitons. Thus conservation of energy requires that all charge-neutral, finite inertial rest mass particles possess non-vanishing electromagnetic moments. Extension to a nonclassical theory that can include both atomic and nuclear binding energies is suggested. (Author).