Lillian Penson 
Colonial Agents of the British West Indies [PDF ebook] 
A Study in Colonial Administration Mainly in the Eighteenth Century

First published in 1924, at the time, this was the first detailed study which attempted to investigate the workings and character of the powerful West Indian interest in London in the eighteenth century. At the centre of this interest stood the Colonial Agent, an office which had come into existence when the West Indian interest was born. Dr. Penson traces its growth from the Restoration era, through the Peace of Paris, when its importance began to decline, to the nineteenth century when the office finally disappeared. It is based on exhaustive research in public and private archives.