Baba-Yaga (general sources)

• "Alexander Afanasyev," page in the Wikipedia website, viewed 9-23-2015. Online at: https://en.wikipedia.org/wiki/Alexander_Afanasyev
• The Complete Russian Folktale: Vol. 1 - An Introduction to the Russian Folktale, by Jack V. Haney, 2001 M.E. Sharpe, Inc., New York, NY, USA. ISBN: 1-56324-489-6 pg. 186-187.
• Folk Tales from the Russian, by Verra Xenophontovna Kalamatiano de Blumenthal, 1903/1979 Core Collection Books, Inc., Great Neck, New York, USA. ISBN: 0-8486-0216-1 pg. 153. Online at: https://books.google.com/books?id=CFgqAAAAYAAJ&pg=PA117&dq=%22omewhere,+i+cannot+tell%22%22&hl=en&sa=X&ved=0CB8Q6AEwAGoVChMIpqLQ6q2ByAIVAgOSCh3SOAo2#v=onepage&q=%22omewhere%2C%20i%20cannot%20tell%22%22&f=false
• Russian Folk-Tales, by William Ralston Shedden Ralston, 1880 R. Worthington, New York, New York, USA. pg. 148-151, 153, 155-156, 163. Online at: https://books.google.com/books?id=LTMYAAAAYAAJ&printsec=frontcover&dq=%22Russian+Folk-Tales%22&hl=en&sa=X&ved=0CCcQ6AEwAmoVChMIs5Wuq62ByAIVkVKSCh0nuQvJ#v=onepage&q=%22Russian%20Folk-Tales%22&f=false

Also, here's a Russian alphabet book for children published in 1904 that includes Baba-Yaga as one of the letter illustrations, showing that she would have been a familiar tale for children then: http://snob.ru/profile/26524/blog/64424