John Gibson; c1725 -1792.

Little is known about this prolific engraver.
Gibson won his fame for his cartographic output for the "Gentlemen's Magazine" (one of the regular publications of Paternoster Row, such as the "London Magazine", the "Royal Magazine", the "Universal Magazine", the "Intelligencer", etc.). The magazines were the prime source of information for the Londoners, anxious to better understand the prosecution of wars, and the land conquests in the far reaches of the Empire. Hence a host of cartographers were kept busy by the reporting of the latest developments: Thomas Kitchin, Emmanuel Bowen, John Hinton, Thomas Jefferys, John Gibson, John Lodge.
Most of Gibson's work was directly derived from earlier maps produced by geographers of good standing.
Of note, the 1758 Atlas Minimus, a collaborative effort with Emmanuel Bowen, edited till 1774.

A map of the new governments, of East & West Florida.

This ever scarcer small map (9 7/8" X 7 1/2") was printed in the November 1763 issue of the "Gentlemen's Magazine". Also issued by Kitchen in 1763 and republished by Bellin in 1768.
This map was based on a Spanish manuscript map, as indicated by the Spanish coastal names. The colony of Florida was transferred to England in 1763 by the first Treaty of Paris which ended the Seven Years' War (the French and Indian War).
The depiction of the Florida peninsula as mostly islands was probably based on the Indian claims to the Franciscan monks that they could paddle their canoes from one coast to the other. This might have been true in southern Florida, south of Lake Okeechobee labeled "Laguna del Espiritu Santo" because the water level in the Everglades was perhaps as 6-8 feet higher than it is now.
The inset (based on a Bellin's work) depicts quite reliably the settlement of Pensacola which became the capital city of West Florida (while St Augustine was the capital of East Florida).
No text on verso.