The Mother - India Post commemorates the founder (along with Sri Aurobindo) of Auroville the international commune at Pondy. Sri Aurobindo was her mentor.
Here is an extract from the Auroville website:
"It was the Mother, as Sri Aurobindo's 'Shakti', who organised the growing group of followers around him into the Sri Aurobindo Ashram from November 1926 onwards, and who in 1952, after his passing in 1950, created the Sri Aurobindo International Centre of Education to fulfil his wish to provide a new kind of education for Indian youth. In 1968 she founded the international township project of Auroville as a yet wider field for practical attempts to implement Sri Aurobindo's vision of new forms of individual and collective life, preparing the way towards a brighter future for the whole earth."