POST OFFICE ENGINEERING DEPARTMENT — Technical Pamphlets for Workmen. [Group H]. COMPLETE SET IN ORIGINAL WRAPPERS

HMSO, 1921[-1938]. 10 vols., 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, covers lightly dust-soiled else a remarkably well-preserved, bright, clean set. The set comprises H1: Open Line Construction Part 1; H2: Open Line Construction Part II; H3: Open Line Maintenance; H4: Underground Construction Part I. Conduits; H5: Underground Construction Part II. Cables; H6: Underground Maintenance; H7: Cable Balancing; H8:Power Circuit Guarding; H9: Electrolytic Action on Cable Sheaths; H10: Constants of Conductors used for Telegraph and Telephone Purposes. COMPLETE GROUPS OF THIS NOTABLE AND HISTORIC SERIES ARE RARE.