Vashistha, as one of 9 Prajapatis, is credited as the chief author of Mandala 7 of the Rigveda. Vashistha and his family are glorified in RV 7.33, extolling their role in the Battle of the Ten Kings, making him the only mortal besides Bhava to have a Rigvedic hymn dedicated to him. Another treatise attributed to him is "Vashistha Samhita" – a book on the Vedic system of electional astrology.
Arundhati and Vashistha pair of stars
Mizar is known as Vashistha and Alcor is known as Arundhati in traditional Indian astronomy. The pair is considered to symbolise marriage (Vashishtha and Arundhati were a married couple) and, in some Hindu communities, priests conducting a wedding ceremony allude to or point out the constellation as a symbol of the closeness marriage brings to a couple.
In the Vinaya Pitaka of the Mahavagga (I.245) section the Buddha pays respect to Vashistha by declaring that the Veda in its true form was declared to the Vedic rishis "Atthako, Vâmako, Vâmadevo, Vessâmitto, Yamataggi, Angiraso, Bhâradvâjo, Vâsettho, Kassapo, and Bhagu" and because that true Veda was altered by some priests he refused to pay homage to the altered version.
The "Vashistha head"
A copper item representing a human head styled in the manner described for Vashistha has been dated to around 3700 BC in three western universities using among other tests carbon 14 tests, spectrographic analysis, X-ray dispersal analysis and metallography.
The head was not found in an archaeological context, as it was rescued from being melted down in Delhi, and has also been seen of questionable veracity as it bears a legible inscription and could simply have be created by recycling material from older copper.
↑"according to Rig Veda 7.33:11 he is the son of Maitravarun and Urvashi" Prof. Shrikant Prasoon, Pustak Mahal, 2009, ISBN 8122310729, 9788122310726. 
↑ "Born of their love for Urvasi, Vasiṣṭha thou, priest, art son of Varuṇa and Mitra;
And as a fallen drop, in heavenly fervour, all the Gods laid thee on a lotus-blossom." 
↑V.Chandran. Astronomy Quiz Book. Pustak Mahal, 1993. ISBN978-81-223-0366-7. http://books.google.com/books?id=8iPU8bZQQdsC. "... the seven rishis in the constellation Saptarishi (Ursa Major) ... In Vasishta (Zeta), its tiny companion star is named after Arundhati, the wife of Vasishta ... today known by their Arabic names Dubhe (Kratu), Merak (Pulaha), Phekda (Pulastya), Megrez (Atri), Benetnash (Marichi) and Mizar (Vasishta) ..."
Atreya, B L (1981 (1st ed. 1935)). The Philosophy of the Yoga Vashista. A Comparative Critical and Synthetic Survey of the Philosophical Ideas of Vashista as presented in the Yoga-Vashista Maha-Ramayan. Based on a thesis approved for the degree of Doctor of Letters in the Banaras Hindu University.. Moradabad: Darshana Printers. p. 467 pages.
Atreya, B L (1993). The Vision and the Way of Vashista. Madras: Indian Heritage Trust. p. 583 pages. OCLC30508760. Selected verses, sorted by subject, in both Sanskrit and English text.
Vālmīki (1982, 2002). The Essence of Yogavaasishtha. Compiled by Sri Jnanananda Bharati, transl. by Samvid. Chennai: Samata Books. p. 344 pages. Sanskrit and English text.
Vālmīki (1976). Yoga Vashista Sara: The Essence of Yoga Vashista. trans. Swami Surēśānanda. Tiruvannamalai: Sri Ramanasramam. p. 29 pages. OCLC10560384. Very short condensation.