Darjeeling Himalayan Railway Society
First-class resource on the DHR, with photos, news, articles
Indian Railways Fan Club Gallery
Very good photo gallery
Mikes Railway History
Good selection of original construction photos and diagrams.
Concise description of route
Kerry Whitfield – Story and photos from a visit to this great little railway
Personal experience story with photos
All things Darjeeling! A wealth of info on the region. Wonderful!