By 1950 the toolkit was not included with the truck but could be purchased separately as an accessory item. Here are photographs of that item. I will have to look through my tools to see exactly what the sizes were.
http://www.flickr.com/photos/advance-design_parts_co/8129504234/in/set-72157631868452754
Expect to pay around $200+ for a similar NOS set. Tools are either VLchek or McKaig-Hatch. Jim Carter sells a set of drawings with the various tools illustrated by year.