[en] Preparations are currently being made at Brookhaven for an experiment to measure the muon anomalous magnetic moment with an accuracy of 3x10^-10. Meanwhile, it is well known that the coefficients of the quantum electrodynamical expansion of the muon anomalous magnetic moment in powers of α are large and growing, so that an estimate of the contributions of thenth order (in e) is of theoretical interest. The first attempt to do this was made previously. Here the author calculates the effect of a set of graphs which was left out of the previous calculations. 5 refs., 4 figs