Just A Car Guy: I just learned that there is a group dedicated to vintage Caterpillar service tools, and that Caterpillar made/supplied tools and tool boxes, some made by Snap On, Armstrong,
Caterpillar Portable Soft-Close 26-in W x 37-in H 5-Drawer Steel Rolling Tool Cabinet (Yellow) in the Bottom Tool Cabinets department at Lowes.com
Cat Tools and Supplies: Field Report -- Rob's Tool Box