The British Library publishes blogs on a number of academic topics that relate to its holdings.  In late 2011, the Library initiated a history blog, "Untold Lives."  If one searches the "commerce" tag, for example, results include posts on:
     
- the establishment of trading relations between the English East India Company and Japan (2013 is the 400th anniversary of that event--see also the Japan 400 website)
 - Forbes and Co., one of the world's oldest businesses
 - Australian Aborigines and Indonesian traders
 - Black London workers for the East India Company
 
