Derbyshire Sheet 26.05 Bolsover (West) 1897 – published 2011; intro by Barrie Trinder. Derbyshire Sheet 26.06 Bolsover 1897 – published 2011; intro by Barrie Trinder. Sheet 26.05 extends coverage westward to include Bolsover Colliery and a complicated railway system that includes the Midland Railway Bolsover station and Markham Junction.