Wes Craven Signed 3×5 Index Card Autographed A Nightmare On Elm Street JSA LOA. Wes Craven Signed 3 x 5 Inch Index Card Autographed A Nightmare On Elm Street JSA LOA. Included is a LOA from JSA. There is writing on the back. Smoke free and pet free environment. This would be a unique and great addition to any collection! This item includes a Letter of Authenticity from James Spence Authentication. JSA is the leading autograph authenticator in the industry. We do our be. Care of our customers. Listing and template services provided by inkFrog.