US Letter, 1 page PDF.
Prints well on A4 and other paper sizes, when you select “fit to page” in the print settings.
On the back of this one-of-a-kind, print & fold envelope, we see Baudelaire’s Fleurs Du Mal*, with gorgeously hand-written notes.
*The book link above is an affiliate link, which means that if you click it and then buy anything on Amazon, they will donate a small portion of your purchase’s profit to my coffee fund (a.k.a. freebie fuel). It doesn’t cost you anything extra and is a nice way to support the Free Library if you’re going to shop on Amazon anyway.