Below is information I have collected over the years from various sources... US made lamps only.....
The 32oz and 52oz bottles came from two different sources
Kimble Glass in Warsaw, Indiana
Owens Illinois in both Perrysburg, Ohio and Toledo, Ohio
The bottles caps were all from
Crown Cork & Seal in Aurora, Illinois
The wax was indeed.....Crayola
Crayola in Easton, Pennsylvania
I was told from time to time other batches were from other manufacturers but the majority supplier was Crayola.
The original Giant and Humungo globes were made in Germany (manufacture unknown)
The 32oz, 52oz, Giant and Humungo bases were made by
Chicago Lighting Supply
I was told they were the sole supplier from the late 70's until 1997 or 1998 when LavaWorld moved the 32oz and 52oz bases to a China supplier. Chicago Lighting made all of the Giant and Humungo bases.
Just thought you would like to know...