Looking for sand paper rolls and adhesive

Where in the devil can I find sand paper long enough to use on my 4
foot long block sander? That and the adhesive for applying it.

I've been resorting to using shorter pieces and self stick adhesive
but I really don't like using 4 pieces of sandpaper.

I have a small bottle of the "self stick" kind that you smear on
sanding disks to use with a disk sander and it works fine for the
block sander, but I don't have much left and the only alternative so
far is going to be contact cement. That stuff is permanent! It'd
make changing sand paper a real bear.

All the stores I've found so far sell the sanding disks with the
adhesive already applied and no longer carry the adhesive.

Roger Halstead (K8RI EN73 & ARRL Life Member)
www.rogerhalstead.com
N833R World's oldest Debonair? (S# CD-2)