First flight cover (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "First flight cover" in English language version.

refsWebsite

Global rank English rank

3web.archive.org

1^st place

1^st place

2americanairmailsociety.org

low place

low place

5^th place

5^th place

2,593^rd place

1,476^th place

216^th place

186^th place

1alphabetilately.org

low place

low place

1uspostalbulletins.com

low place

low place

340^th place

295^th place

1tag-der-briefmarke.org

low place

low place

about.com (Global: 216^th place; English: 186^th place)

stamps.about.com

Finch, John. "Different Types Of Collecting Philatelic Covers". About.com. Archived from the original on 2015-03-31. Retrieved 2015-04-24.

alphabetilately.org (Global: low place; English: low place)

"F is for Firsts: First Flights". Alphabetilately.org. 2007-01-18. Retrieved 2015-04-24.

americanairmailsociety.org (Global: low place; English: low place)

"Glossary of Aerophilatelic Covers". American Air Mail Society. 2013. Archived from the original on 2015-09-10. Retrieved 2015-04-24.
"Catalagos & Books". American Air Mail Society. 2015. Archived from the original on 2015-04-26. Retrieved 2015-04-24.

si.edu (Global: 340^th place; English: 295^th place)

postalmuseumblog.si.edu

Ganz, Cheryl (2011-01-25). "India and the World's First Official Air Mail by Airplane". Pushing the Envelope. National Postal Museum. Retrieved 2015-04-24.

tag-der-briefmarke.org (Global: low place; English: low place)

"Erste deutsche amtliche Postflüge in Heidelberg und Mannheim am 19. Mai 1912" (in German). tag-der-briefmarke.org. 2012-01-07. Retrieved 2015-04-24.

uspostalbulletins.com (Global: low place; English: low place)

"Mail for First Air Mail Flights" (PDF). The Postal Bulletin. 157 (14081). United States Post Office Department: 1. 17 May 1926. Retrieved 2015-04-24.

usps.com (Global: 2,593^rd place; English: 1,476^th place)

about.usps.com

"Glossary of Postal Terms: Publication 32" (pdf). United States Postal Service. July 2013. p. 85. Retrieved 2015-04-24.

web.archive.org (Global: 1^st place; English: 1^st place)

"Glossary of Aerophilatelic Covers". American Air Mail Society. 2013. Archived from the original on 2015-09-10. Retrieved 2015-04-24.
Finch, John. "Different Types Of Collecting Philatelic Covers". About.com. Archived from the original on 2015-03-31. Retrieved 2015-04-24.
"Catalagos & Books". American Air Mail Society. 2015. Archived from the original on 2015-04-26. Retrieved 2015-04-24.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Mackay, James A. (1971). Airmails 1870–1970. London: B.T. Batsford. ISBN 0713403802. OCLC 152505.
Jones, Allen Don (1993). Aerial Mail Service: A Chronology of the Early United States Government Air Mail March — December, 1918. Mineola, NY: American Air Mail Society. pp. 53–113. ISBN 0939429144. OCLC 30318465.