Letter from Liberia Arrives in US

Got this note from my Dad this morning:

Your letter arrived this AM, and I had to sign for it! It was marked
"Express" and "Air Mail" and "Monrovia Postal Exchange...Postage
Paid...Rain or Shine the Mail Must Go".

And I'm glad it arrived, because I put a lot of work into that sucker! Seven pages or something.

I paid LD$100 to mail it, which is like US$1.67, some 13 days ago. This was back before they had stamps. Now they have stamps.