Telegraph stamp (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Telegraph stamp" in English language version.

refsWebsite

Global rank English rank

1books.google.com

3^rd place

3^rd place

1philatelicsannex.org

low place

low place

books.google.com

Courtney, Nicholas (2004). The Queen's Stamps. London: Methuen. p. 145. ISBN 0-413-77228-4.

philatelicsannex.org

Melville J., Fred (1926). The Mystery of the Shilling Green (PDF). London: Chas Nissan & Co Ltd. pp. 9 & 15.