Reply to wimmera farmer:
Here is a scan of the toolkit list for Cat 22- 21F1373 packed 11/27/1934.
I also have the envelope
First owner believed to be in the Penola area South Australia.
Some of the tools are still with the tractor.
cheers WF

Here's some pics of a NOS Caterpillar D4 tool kit I added to my collection a while ago. Most of the tools Cat used were provided by other established tool makers, the double end wrenches are almost always Billings with the Caterpillar part number stamped on them, some of the other odd wrenches are Armstrong and Vlchek also carrying Cat numbers, the grease guns were either Lincoln or Alemite, the track grease pumps were Alemite, and some of the special parts like the fuel injection caps and the feeler gauge in this set actually just have Caterpillar on them.
[img]http://i802.photobucket.com/albums/yy310/TRNelson/summer%202012/004_zps98bc6cda.jpg[/img]
5B787 wrench made by Billings
[img]http://i802.photobucket.com/albums/yy310/TRNelson/summer%202012/005_zps0f25ef95.jpg[/img]
Lincoln grease gun, but the tag on the packaging shows the Cat part number and states that the product inside meets all Caterpillar specifications.
[img]http://i802.photobucket.com/albums/yy310/TRNelson/summer%202012/008_zpsfdd998d9.jpg[/img]
[img]http://i802.photobucket.com/albums/yy310/TRNelson/summer%202012/007_zps6dc608c6.jpg[/img]
[img]http://i802.photobucket.com/albums/yy310/TRNelson/summer%202012/006_zpsf5cf1603.jpg[/img]