About Yogasopana Purvacatuska
The Yogasopana Purvacatuska or Stairway to Yoga is a 1905 book in Marathi on hatha yoga by Yogi Narayana Ghamande. It describes and illustrates 37 asanas including Matsyendrasana and Sarvangasana, along with mudras such as Viparita Karani.