Set of 7 illustrations for female stretches from Malmstead 'Awaken your Sleeping Beauty' 1935

Each is a stylized nude drawing of a female body doing a particular stretch.

Drawn by Tonya, from Miss Lilyan Malmstead's book 'Awaken your Sleeping Beauty'

Each illustration has a printed inscription on the back associated with the stretch: e.g. 'Awaken the Beauty og the Thighs, Calves and Ankles'.

Each has a pencil/pen inscription with info on name of book, artist, year, and states the Miss Malmstead was the model. 

Assuming these are from the book.

Each measures 13.5 X 18.5 cm, in nice condition.

The book description:

New York: E.P. Dutton. 1935. First edition. Small octavo.  From the preface "The purpose of this book is to awaken the perfect self, which you really are, and to develop in you a new dimension-ERECTITUDE". Also, from the title page "Lengthen the line between the chin and the waist and you will lengthen your years". Uncommon title with lovely illustrations by Tonya.

There were 10 illustrations.