This Essential Special Service Tools brochure by the Miller Manufacturing Company appears to have been first published in late 1945 or early 1946 (I’m assuming this based on the Willys-Cars-Trucks-J sign on the cover). It was then updated with this second edition in December of 1948.
These aren’t best scans, so I’ve had to do repairs in Photoshop. I’ve actually had this digital brochure scan for several years, but finally had a chance to assembled the scans yesterday, after Maury noted that this has the Willys sign, which would make it the latest document we’ve found with the Willys-Cars-Trucks-J sign on it. There’s a companion brochure for Trucks in the post below.