I like smurf mail

Here'a few of my favorites:
1. "Ladies" embossed cover c. 1855 (2 1/4" x 3 1/2")

2. First flight CAM 9 1928 (2 3/4" x 3 3/4")

3. First flight USS Macon 1933 (2 1/4" x 5")

4. And the smallest envelope I have ever seen. Charity label probably early 1900s (1 1/4" x 2")

