FIG. 1 is a top plan view showing the telephone base set housing of my new ornamental design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a right side elevation thereof;

FIG. 6 is a left side elevation thereof;

FIG. 7 is a fragmentary sectional view taken along 7--7 of FIG. 1, indicating the longitudinal contour of the depression on the left side of the top of the housing;

FIG. 8 is a fragmentary sectional view taken along line 8--8 of FIG. 1, indicating the transverse contour of the depression on the left side of the housing; and,

FIG. 9 is a fragmentary sectional view taken along line 9--9 of FIG. 1, indicating the transverse contour of the depression in the left side of the top of the housing.