Some of Bowen's county maps are easily recognised by the panels of text filling every available space
There were a number of editions of The Large English Atlas from 1755 to about 1787. I have found that the contents of the copies of the atlas I have handled over the years do vary. This list is take from a copy of the atlas in my own collection which has an added undated titlepage but which I am guessing is the 1787 edition. The usual way to date these maps is from the publishers imprint beneath each map.The early editions have the names of J. Tinney, T. Bowles, J. Bowles and Robert Sayer. Later editions have the names of Robert Wilkinson, Robert Sayer and Carington Bowles.
All of the Welsh county maps are half page in size and abut each other. So when you find a loose map it will either be with its county partner on the same printed sheet or it will be a single county with no blank margin on one side or with an added margin on one side.
North Wales by Emanuel Bowen
Oxfordshire by Emanuel Bowen
Co.unty Durham by Emanuel Bowen c.1755
Kent by Emanuel Bowen c.1749
Dorsetshire by Emanuel Bowen c.1749