Labels for insertion into a reference divider tab
US D577386 S1
The ornamental design for labels for insertion into a reference divider tab, as shown and described.
FIG. 1 is a perspective view of labels that are each insertable into a reference divider tab; and,
FIG. 2 is a front view of the labels of FIG. 1, it being understood that the back view thereof is a mirror image of the front view.
The broken lines in the figures are shown for illustrative purposes only and form no part of the claimed design.