[Bug-wget] public signature location

[kyoung]

Where is the public signature that can be used to verify wget? I downloaded 
http://ftp.gnu.org/gnu/wget/wget-1.12.tar.gz and 
http://ftp.gnu.org/gnu/wget/wget-1.12.tar.gz.sig

~/Downloads] ls
wget-1.12.tar.gz        wget-1.12.tar.gz.sig

~/Downloads] gpg --verify wget-1.12.tar.gz.sig 
gpg: Signature made Tue Sep 22 12:49:54 2009 EDT using DSA key ID 4A1B4EB1
gpg: Can't check signature: public key not found

~/Downloads] gpg --search 0x4A1B4EB1
gpg: searching for "0x4A1B4EB1" from hkp server keys.gnupg.net
gpg: key "0x4A1B4EB1" not found on keyserver