Besides the works of Saraswati Gangadhar and Annasaheb Dabholkar, what other Guru biographies are mentioned in the text?

The preface discussed in Chapter 0 mentions several other Guru biographies beyond the two most famous ones. It recalls a detailed, scholarly biography written by Shri Samarth Sadguru Tembhe Swami, also known as Vasudevanand Saraswati Maharaj. However, this work did not achieve the same level of fame as the one by Shri Saraswati Gangadhar. The text also notes hearing about another Guru biography written by Shri Samarth Sadguru Dattatreya Maharaj of Balekundri, which, at the time, had not yet been printed or published, making it inaccessible to the public.