Early 19th century Yoga poses drawing book with and
illustrations and explanations is currently on public domain in the website of
British Public Library. The drawing shows the secrets of 84 asanas and 24 mudras
practiced by the Hatha Yogis.
The explanatory notes in Braja-bhasha verse. The manuscript
has 118 pages and was written at the beginning of the 19th century.
You can view the book in complete here at the British PublicLibrary.