As the book's name suggests, it has patterns from the "turn of the century". More specifically, from 1890 to 1896.
The first three pages run over how to graph out a pattern, take your measurements, and adjust the pattern to fit. Basic knowledge of sewing, and a familiarity with patterns is a must. Or at the very least, you need to be a daring new sewer that isn't intimidated by challenges. The instructions are informative but brief.
Each pattern has a fashion etching in black and white to illustrate the design it's based on. The etching shows trims and accessories. There is a diagram for each style that lays out all the pattern pieces needed to create it. All the measurements are listed in inches. They are clear and easy to read.
There are 31 womens patterns : included are numerous sleeve layouts like two part coat, leg-o-mutton, 2 part leg-o-mutton, different fullnesses of sleeve. Several styles of skirt, one draped like the previous bustle decade, mostly three or five gore skirts, umbrella skirt. There are different collar styles, bodices cut in both princess and darted. A cape and coat pattern, etc. There is one nightgown pattern.
There are 21 misses and girls costumes. They cover the same span of years. There are dresses appropriate to very small children up to teens. There is one evening dress pattern for a girl of about 5-9. There is also one pattern for drawers and one for a chemise.
There are two patterns for boys. Mainly young boys. One is a pants suit, so i assume that would be for post diaper age. The other is a kilt costume.
There are three mens patterns. One nightshirt, dressing gown and coat. There is no picture of the coat.
My count brings me to 57 patterns, I must have missed a couple somewhere. But hopefully this will give you a good idea of the book contents. I have made some of the dresses from this book. The patterns work out well, however to create a truly period looking garment you need more information than what this book gives you. The construction techniques and trimming methods are quite different from how most basic sewing is done today. It would help the beginner to have some hands on exposure to actual period garments. Mostly to see how they are lined, interlined, stiffened, boned, etc. In my experience, it is the linings and foundations that give the finished product it's form. The outer image of the costume is merely floating on that foundation. This book does not cover foundations sewing techniques at all. But with some hands on antique garment experience, you could easily create an authentic looking dress from this book.