Letter written on 13 Dec 1961
This is one of hundreds of letters Osho wrote to Ma Anandmayee, then known as Madan Kunwar Parekh. It was written on 13th December 1961. The letterhead is his new "professional" letterhead, which has in the top left corner: Acharya Rajneesh / Darshan Vibhag (Philosophy Dept) / Mahakoshal Mahavidhalaya (Mahakoshal University) and in the top right: Nivas (Home) / 115, Napier Town / Jabalpur (Madhyapradesh).
Osho's salutation in this letter is his standard "प्रिय मां" (Priya Maan, Dear Mom, Beloved Mother). There are a couple of the hand-written marks on the page that have been observed in other letters: a blue number (41) in a circle in the top right corner and a second, pale and mirror-image number (66) in the bottom right corner, but no red tick mark.
We are awaiting a transcription and translation.
And see also Letters to Anandmayee