Other cities will be added.

Graphic charts present unusually comprehensive data in condensed form for analysis and interpretation. Major libraries should contain a division of graphic charts. Filing most of the material could be easily done by placing material in the usual letter vertical files. Provision should, of course, be made for cross references. Probably it would be desirable to have two sections, one for scientific and technical data, the other to contain all other material. To aid those studying graphic presentations, larger libraries would do well to have a separate file classified according to types of graphic charts, irrespective of the subject matter.

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GENERAL REFERENCES

HISTORY OF GRAPHIC METHODS

Funkhouser, H. Gray, "Historical Development of the Graphical Representation of Statistical Data," Osiris, Vol. Ill, Part I, 1937

Walker, Helen M., Studies in the History of Statistical Method, Williams & Wilkins Co., Baltimore, Md., 1929

GRAPHIC METHODS

Arkin, Herbert, and Raymond R. Colton, Graphs: How to Make and Use Them, Harper & Brothers, New York City, 1936

Brinton, Willard C, Graphic Methods for Presenting Facts. Mc- Graw-Hill Book Co., Inc., New York City, 1914

Brown, Theodore H., Richmond F. Bingham, and V. A. Temnomeroff. Laboratory Handbook of Statistical Methods, Mc- Graw-Hill Book Company, Inc., New York, 1931

Chaddock, R. E., Principles and Methods of Statistics, Houghton Mifflin Co., New York City, 1935

Croxton, Frederick E., and Dudley J. Cowden, Applied General Statistics, Prentice Hall, Inc., New York, 1939

Crum, William L., Alson C. Patton, and Arthur R. Tebbutt, Introduction to Economics Statistics, McGraw-Hill Book Co., Inc., New York City, 1938