The Delvers, Delving along the Derwent — a History of 200 Quarries and the People who Built them : edited by Ian Thomas, Middleton by Wirksworth (Derbyshire Wildlife Trust): Derwentwise Partnership, 2019, 191 pp., c. 540 illus. First print run free but a donation of £15–£20 to the National Stone Centre requested (Pb), ISBN 978-1-871827-43-9 : edited by Ian Thomas, Middleton by Wirksworth (Derbyshire Wildlife Trust): Derwentwise Partnership, 2019, 191 pp., c. 540 illus. First print run free but a donation of £15–£20 to the National Stone Centre requested (Pb), ISBN 978-1-871827-43-9