In the 1960s, 70s, and 80s researchers like David McCutchion, Pranab Ray, Sambhunath Mitra, Hitesranjan Sanyal, Amiya Bandyopadhyay, and Tarapada Santra painstakingly traversed the Bengali countryside to survey and write about Bengali temples.
Over the last twenty years I have compiled a comprehensive list of temples from the surveys by the above scholars and from the Jela Purakirti (District Archeology) series of books published by the West Bengal government in the 1980s. The lists have been further updated and corrected over the last decade from my personal travels as well as from information from many fellow researchers and travellers.
The lists are actively maintained. Please contact me about any errors or omissions.