Not much is known about Silver, the best guess is that he was an officer aboard the 40 gun frigate HMS Hector (built 1721 - broken down 1742). He reported and sketched his precise knowledge of the English positions at the begining of the siege in a lettter which was dispatched to London, said sketch was then used to draw this map which was published in the July 1740 issue of " The Gentleman's Magazine".
The magazines of London. c1725 - c1800.
Around 1750, London witnessed the explosive circulation growth of periodicals (mostly monthlies). These magazines, generally extremely well researched, offered up-to-the-moment political/economical/social information to their well educated audience. Some of these magazines are still regularly published today. Based mostly on/around PaterNoster Row, the Gentlemen's Magazine, the Royal Magazine, the Universal Magazine, the Intelligencer, the Lady's Magazine, Town and Country Magazine, the Scot's Magazine (in Edinburgh), . were the main source of information for the british elite when it came to detailing and explaining the latest developments in the far reaches of the Empire. As such, a full complement of cartographers was retained to illustrate battle accounts, town sieges, harbor blockades, and land conquests; almost in real time (for that period). Thomas Jefferys, Thomas Kitchin, Emanuel Bowen and later his son Thomas, John Hinton, John Gibson, John Lodge, John Cary, Thomas Silver, and many other of lesser reputation, participated in the effort.
In most cases, the maps were of rather small format, and uncolored.
A view of the Town and Castle of St Augustine, and the English camp before it June 20 1740.
This small map
(6 9/16" X 11 13/16") was printed for the July 1740 issue of the Gentleman's Magazine. It is known to have been reprinted a few years later to illustrate the memoirs of self-proclaimed General James Edward Oglethorpe.
At the beginning of the Jenkin's Ear War (1739 - 1742), Oglethorpe entertained the idea of capturing Saint Augustine. He assembled an army of close to a thousand men, including Royal Navy sailors, a force of Georgian Highlanders and a sizeable contingent of allied Indians. From May to July 1740 he laid siege to the small town, shelled it, but could never penetrate the stubborn defensive positions. After continuously inept military maneuvers he could not but cut his big losses, lift the siege, weigh anchors and return to Savannah. The map shows clearly the encampments and batteries of the English forces.
No tesxt on verso.