Signatures are from "Weird Al" Yankovic and MAD Magazine editor John Ficarra.

These were obtained at a signing that took place on April 20, 2015 at Barnes & Noble at Union Square in Manhattan.

Link to the event here:

https://www.madmagazine.com/blog/2015/04/20/tonight-weird-al-and-mad-at-barnes-noble-in-nyc

If you have any questions don't hesitate to ask! Thank you.