  Sorkin's coevent interpretation shifts the focus of quantum logic from the
structure of a propositional lattice to the nature of truth valuations thereon.
We apply this shift in emphasis to a simple formulation of the consistent
histories approach, expressing it in terms of truth valuations which are
brought together in a logical framework. We see that these consistent histories
valuations are related to Sorkin's multiplicative coevents, and that they can
be naturally described by an adaptation of Isham's early topos-theoretic
approach.
