armrest and vent crank

i'm restoring a 1968 galaxie 500 convertible. where on earth can you find the front door armrest and vent crank. i have checked e-bay, googled, restore parts venders and junk yards. For some reson that this door is really special. the armrest is a 3 screw hole. first to second is 6 inches. first to third is 14 inches. i never had the old ones so i have no idea what the cushion looks like. also i have 1 vent crank but need another. this one looks like the window crank but halve the size with the cut out. im really sure there is someone out there knows if its possible to find them or i might have to use something else. thanks for reading this.