Bharat Mat Darpan - Mahant Ganesha Singh
A detailed guide to over 200 different religions and sects of India.
It was written earlier, I think maybe sometime between 1830-1870, but then republished for a second time in 1926. This is the second publication. It has a history of Nihang Singhs, Akalis, Khalse Panth, Kabir Panth, and many many others.
edit: Updated link