Railway Postmarks of the Maritimes 1866-1971
Railway Postmarks of the Maritimes, A Study of the Cancellation Devices 1866-1971, 2000 by Gray, Ross D.. A detailed examination of the RPO’s & other transportation related cancellation devices used in NS, NB & PEI between 1866 & 1971 based on hammer studies started by Lew Ludlow. Spiral Bound, 107 pp. Note: The chordal measurement charts and other information required to differentiate the various hammers within each listing are to be used in conjunction with the Maritime section of The Catalogue of Canadian Railway Cancellations and Related Railway Postmarks including Selected Waterway Postmarks, Second Edition, by Gray, Ross ed. 2015.