Help with fender removal

[Ford_Crazy]

I am pulling the front cap off my 57 Custom. Inside the fender well there are three rear bolts holding the fender.  Two go to the side of the fender itself, one bolts to the firewall. I can't seem to find the nut on the back of the firewall.  I last did this job about 20 years ago and can't remember where it is.  Thanks for your help!

[Ford_Crazy]

Found it...I've got to get new glasses!