English annotation by Vishnudut1926: This a superb Grantha from Shree Radha-Vallabha-Sampradaya.
It had been written by OM VishnuPad Shri Hita KrishnaChandra MahaPrabhu and it is purely in kinkari-bhava (manjari-bhava).
If you are fond of manjari-bhava books, you must definitely add this perfect Grantha into your collection.
The same Granthas of this kind from Shree Gaudiya-Sampradaya, for example, are "Shree Prema-Bhakti-Chandrika" by OM VishnuPad Narottama Das Thakura or "Shree Sankalpa-Kalpadruma" by OM VishnuPad Shrila Visvanatha Cakravarti Thakur.
If you follow the semantic structure of "Shree Radha-UpaSudha-Nidhi", you will notice that all the Verses are neatly organized into separate semantic clusters. For example, one cluster says about Ananda-Rupa of Shreemati Radharani-Devi, the other one says about Shree Vrindavan-Mahatmya, one more cluster dwells on Sharanagati-Bhava and etc.
Here are some Verses I personally liked the most (Verses 10, 25, 31, 59):
Vishnudut1926, Moscow, July 2017