During the last fifty years a considerable amount of material relating to the institutional structure of the Spanish colonial city in America has appeared. In most instances, however, this material directed itself to a consideration of colonial city governments shortly after the Conquest or during the zenith of the empire. Of equal interest should be a consideration of these institutions at the moment of their disintegration, that is, during the Spanish American Wars of Independence.

Whilst much illuminating research has been conducted into early British diplomatic and commercial activity in the River Plate, few scholars have yet focused upon the lives of individual settlers in any detail. The present article moves some way towards redressing this imbalance through the study of the Gibsons, a prominent Argentine-Scottish family with pioneering interests in commerce and sheep breeding. The analysis gives special weight to letters exchanged by the brothers Robert and George Gibson during the late 1830s, casting light upon the incomers' perspective of political turbulence as dissident forces fought to depose the dictator Juan Manuel de Rosas.

Rescates (ransoms) consisted of the repurchase by Spanish and Spanish American merchants of ships and cargoes taken as prizes during wartime and sold in the British West Indies. This is the first detailed study of the subject, drawing on archives in Britain, Spain and the Americas. It is argued that rescates typified a broader range of legal ruses designed to protect Anglo-Spanish trade in the Americas from both wartime disruption and customs interference. As a mechanism for the legal protection of commerce promoted by both the British and the Spaniards, rescates enjoyed considerable success during the war that commenced in 1796, especially with respect to trade between the British ports in the Caribbean, Cuba and Mexico. They thus played a key role in the strong and sustained growth which characterised trade between the British and Spanish empires during these years.