Gotham Narrow Book Italic is a tweaked version of Gotham Narrow Book, which still maintains the true essence of Gotham Narrow. The font, like its counterpart, is light in weight and width but is slightly slanted towards the right.
This tweaked version is well articulated and is most suitable for text book printing. This is why many publishing houses stick with this font for the same. The font is simple and clear to read and in fact is legible even from far distances. The slanting text adds elegance and beauty to each word without tampering with the Gotham style of print.
See also: Free Gotham Font: Gotham Narrow Book