In 1883, Edward Money published this great work on the state of the tea industry in India. He goes into the different regions of India, how to set up a tea garden, grow the tea, harvest the tea, process the tea. Everything you’ve ever wanted to know!
Here are some photo excerpts:
The best part about this is that it is available for download for free @ Archive.org: http://www.archive.org/details/manufacturetea00monerich