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8. Map pins having sharp points and small spherical glass heads in contact with the map. These pins are available in many different colors; the upper one in No. 8 is red and the lower one blue.

9. Beads in various colors of a size to correspond with the map pins in No. 8. Here the beads were red. White beads, used for every tenth position, show at a glance that there are 22 beads on the pin. Note that the color red photographs as black.

10. Map pins having sharp needle points and spherical glass heads in contact with the map. The pin is of the same general style as No. 8 but it has a head of larger diameter. This pin is obtainable in many colors.

11. Cloth-covered map tacks available in plain colors and in plaids.

12. Single bead used with an ordinary pin as a crude substitute for a regular map pin.

13. Beads in different colors corresponding in size with the map pin of No. 10.

14. Beads of two different sizes representing different things but at the same location.

15. Beads of two different sizes and three different colors. Since both sizes and colors may be varied, and almost any number of beads used on one pin, there are practically unlimited possibilities for the showing of complex data.

16. Beads on a pin which holds down on the map a sheet of colored celluloid cut to the exact shape of a small land area to which attention is directed.

17. A sheet-celluloid marker held by a map pin like that seen in No. 8.

18. Celluloid-covered tack, available in different colors.

19. Celluloid-covered tack with stripes of different colors.

20. Celluloid-covered tack with printed numbers from 1 to 99 inclusive.

21. Celluloid-covered tack having a rough surface so made that the surface may be written upon with pencil or pen, yet erased afterwards or rubbed off with a moist cloth. Lettering may be made permanent by means of a coat of varnish.

22. Large size celluloid-covered tack available in different colors.

23. Large size celluloid-covered tack with stripes of different colors.