I discovered two files on the Antique Pattern Library web site that are a very useful and free book on Drawn thread embroidery.
If you are interested in even weave stitching techniques you will enjoy Part I – Drawn Thread Embroidery by Therese Dillmont (PDF) and Part II – Drawn Thread Embroidery by Therese Dillmont (PDF)
Both of these resources are PDF files which means you need Acrobat Reader to open these files. You can download a free reader on the Acrobat site.
Since this is a book that is online because it is not longer under copyright instructions are old fashioned and in black and white but since we are talking about a traditional hand embroidery technique this is not a problem. The information is the same just presented in a manner which is no longer fashionable. These old books are often a little confusing when you first read them but you soon learn to make sense of the way they present instructions.
Not only are the basics of this technique covered but many different insertion patterns and needle weaving patterns are included.
The first PDF file mainly contains instructional material that covers the stitches and patterns. The second PDF file give detailed instructions on how to work some of the designs.