A reduced version of Rocque’s landmark map of London

A reduction of Rocque's monumental 24-sheet map of London, here on one sheet, albeit an unusually large sheet of paper for the period. With the plan engraved by Isaac Basire and the letters by R.W. Seale, it was apparently published as an advertisement for the full-size map: the text under the map transcribes the endorsement of Folkes and Davall, two members of the Royal Society, for the accuracy of Rocque's trigonometrical survey. First published in 1749, this example comes from the third state; only the publication line has been changed. Usually a map of this size would have been printed on two sheets and then joined. Producing a map of this size needed not only a large sheet of paper, but also a large copper printing plate and press. As a separate-issue there are always some condition issues with this map.