By printing color on one side of each of these 16 sheets, there would be two pages of color alternating with two pages of black print. In order to have more than one color on several color forms. 24 colorplates were distributed throughout 16 forms. One form, the color form of the 14th sheet (pages 417 to 448) has all four colors. The color form of the 3rd sheet (pages 65 to 96) has three colors. All the others have either one or two colors.

The four colors used -- red, yellow, blue, and green -- were selected as the ones that could be used to the best advantage in "dressing up" graphic charts. This necessitated colors that were strong enough to be used alone and that could also be combined effectively with others. Printing was done by Gray Photo-Offset Corporation, New York City.

The following offset inks of The Fuchs & Lang Manufacturing Company, 100 Sixth Avenue. New York City, were used: Red NY-10876. Green # 4697-A6690. Yellow #41 Litho Ink, Blue #26 Litho Ink. Domino Black Litho Ink. The ink for the end paper was Fuchs fls Lang Offset Brown #60 Litho Ink.

The paper was furnished by Mead Sales Company, New York City. It is Moist rite Offset 70 #. The paper for the end papers is Weycroft Ivory 100 #, manufactured by W. C. Hamilton dt Sons, Miquon, Pennsylvania.

The illustration for the end papers was redrawn from a photostat of the original, measuring 195^" x 11".