"Published by the authors in cooperation with ... The Stuart Rossiter Trust Fund, The Royal Philatelic Society London, The British Philatelic Trust, [and] The British Philatelic Association Expertising Educational Charity."
In ring binder.
Ecuador : the philately of the Seebeck era, January 1892 to mid-June 1897 : its stamps, proofs, postal stationery & postal history by Robert A. D'Elia. ISBN 0976602105. Published by R.A. D'Elia in 2005. Publication and catalogue information, links to buy online and reader comments.