I am pleased to notice that Nitai Das has just posted the first couple of chapters of a book by Bipin Bihari Goswami, Harinamamrita-sindhu.
Neal is in London currently and has been looking for rare titles in the British Library. He came across this work by Bhaktivinoda Thakur's guru. Certainly the publication of these works will be welcome to all the members of Bhaktivinoda Thakur's parivar.
He has also uploaded a PDF Devanagari version of Chaitanya Upanishad.
Many thanks to Nitai.
All newly uploaded documents can be viewed at Search New Texts on the Gaudiya Grantha Mandir.