Results from an early polarization model based on Maxwell's Invariant Multipole Form This paper reviews the cooperative water model of Campbell and Mezei based on the Maxwellian form of multipole interaction. The Maxwellian form is described and the algorithms and software for their implementation in both disordered and ordered phases are presented, followed by the specifics of the model. The model has been used in a number of calculations on various water clusters, liquid and crystal models. The results of these calculations are briefly summarized and their implications, relevant to polarization model in general, are discussed.