Very scarce, the definitive work on The Postal History of the Transitional Period, 1922-1925, by Dr C.I. Dulin of Geneva, published by Macdonnell Whyte in Dublin in 1992. 394pp.

Published by the Collectors Club - handbook no. 18 - in 1964 - 208pp. Patterson's biography is on the dustjacket.

"A Transient Victorian Phenomenon" - the definitive work on this fantastic example of Victorian ephemera. 152pp

A Historical Survey to 1836 - 1st edition, Edinburgh University Press, with original map/inserts

A history of their stamps with their reprints and forgeries - published by Robson Lowe

From Hinrichsen to Krag (1866-1906) - the definitive work - updated 2008 edition

Rare and important work - with two Prices Realised lists

English edition of definitive work

Illustrated with 40 pages of half-tone plates

Very well illustrated - focuses on 1866-1918, by issue and years, with detailed information not found anywhere else

Fine hardback first edition, Quarterman Publishing