  Following the procedures by which O(N)-invariant real vector models and their
large-N behavior have previously been solved, we extend similar techniques to
the study of real symmetric N x N-matrix models with O(N)-invariant
interactions. Proper extensions to N equal infinity are also established. While
no 1/N-expansions are involved in our analysis, a brief comparison of our
procedures with traditional 1/N-expansion procedures is given.
