Manila-Madrid Arnacal Overprint / Surcharge Stamp

Hi Everyone,
I can't find much on the Arnacal Flight, 1936.

I have a general question too.... Why are there some stamps that have both Philippine Islands AND United States of America on them? What do both countries have to do with one another, that there are stamps with both?

Okay, lemme think LOL... Now I see the overprint / surcharge '6' but when I search for 'Arnacal Flight' online, it comes up with this stamps, I am curious about the history of the flight.

And, Okay the stamp has Philippines, USA and overprint with Manila and Madrid? I am very curious what Manila-Madrid has to do with it all.

Thank you all so much!
SueStamps

After the Spanish American War of 1898, the United States as victor won control over Porto Rico & the Philippines. So those issues with both nations listed were issued while a territory, then Commonwealth of the United States. Since Spain had been the colonial power in control for a few centuries so Spanish influence was still strong. So a flight to Madrid was likely!

Look in the back of a US catalogue under US possessions. This is an airmail SC#C55 1936

The word ARNACAL is formed from the names of the 2 aviators who undertook the flight from Manila to Madrid - Antonio ARNAiz and Juan CALvo. The actual flight left Manila on 29th May 1936. There's an interesting story covering the flight at this link (about two-thirds the way down the page):

http://silakangnegros.multiply.com/...lies=reverse

Here are a couple of covers carried on the flight:

http://www.philippinephilatelist.ne...6/1936.6.jpg

A set of 3 overprinted stamps was issued on 6th September 1936 to commemorate the flight. Spain also issued an overprinted stamp to mark the same event. A bit more information about these issues, near the top of the 2nd column:

http://www.flightglobal.com/pdfarch...%203409.html

Thank you all so much for the information. I am just amazed! I printed and saved everyone's threads and am keeping it with this stamp.