Years ago for my sister's 30th birthday, I did a fun project involving the USPS. I wanted to send her the message "Happy Belated Thirtieth Birthday!", which is 30 characters, via postcards, one character per postcard. I found 30 post offices in unique places throughout the U.S. (For example, I found a town that had the same name as her given name in Illinois. I found another with my name, etc.) I used Zazzle to print…
I didn’t understand the part where you included a second? addressed envelope to avoid machine cancels? If already canceled, why would it happen again?