Fillet of a fenny snake,
In the cauldron boil and bake;
Eye of newt, and toe of frog,
Wool of bat, and tongue of dog,
Adder's fork, and blind-worm's sting,
Lizard's leg, and howlet's wing,
For a charm of powerful trouble,
Like a hell-broth boil and bubble.
Macbeth Act IV Scene I
Fortunately for me this envelope did not contain any type of hell-broth, just a nice letter from Eva. Great coloring that goes with the stamp.
Although these eyes on the back gave me pause...