Sri Aurobindo
Letters on Yoga
6. The Divine and the Hostile Powers
Yes, Mitra is rather a combination of two powers [Mahalakshmi and Mahasaraswati].
Current publication:
Sri Aurobindo. Letters on Yoga // SABCL.- Volume 22. (≈ 28 vol. of CWSA).- Pondicherry: Sri Aurobindo Ashram, 1971.- 502 p.
Other publications:
1. 10576.
Sri Aurobindo. Letters on Yoga. I // CWSA.- Volume 28. (≈ 22 vol. of SABCL).- Pondicherry: Sri Aurobindo Ashram, 2012.- 590 p.
2. 23988.
Sri Aurobindo. The Mother // SABCL.- Volume 25. (≈ 32 vol. of CWSA) The Mother with Letters on the Mother and Translations of Prayers and Meditations.– Popular Edition.– Pondicherry: Sri Aurobindo Ashram, 1972.– 496 p.