Is This What You Would Call White War Paper?

hello,

I have these two pieces where I don't really know what color / paper type it is. I think I see them both as "white", but the paper quality is not very fine. There is no watermark but quite many paper fibers. On one we have the date, 1930, so not the war time.

anybody can help here? thank you.

first one:




second one:

I believe your two examples of U.S. stamped envelopes are on white paper (as far as the catalog is concerned).

The paper we call "war paper" - dull, coarse, grayish - can actually be found from before WWI as well as after. Not as late as 1930 however, nor on any of the air mail issues, as far as I know.

That paper that is seemingly swimming in little brown fibers is common on the air mails of the period. Still, it is called "white".

thank you, as always, for sharing your knowledge, that answers all my questions.
indeed the fibers are really many on this airmail paper.