Avengers (1963 1st Series) #73

"The Sting of the Serpent" Part 1 of 2. Script by Roy Thomas. Pencils by Frank Giacoia. Inks by Sam Grainger. Cover by Marie Severin and Sam Grainger. The Sons of the Serpent prowl New York City once again! And the venomous hate group has a new target! An up-and-coming singer named Monica Lynne! But fortunately for the talented vocalist, she has a guardian angel or perhaps better yet…a guardian panther!