I am going to post a chart below. But just to re-explain what I did here, first...
- I searched ITCL (again,
@Mark Stansbury 's massive hand tools catalog library on Internet Archive) on the terms "
Pyralin", "
Tenite", "
Cellulose Acetate Butyrate", and then just "
Cellulose", "
Acetate", and "
Butyrate" individually, because "Cellulose Acetate Butyrate" got very few hits. (Just as a side-note, they are all celluloids.) Each search produced a mess of catalogs.
- In each case, I made a list of the names of the mfgrs and the dates of the catalogs in which the words appeared. It could appear once or on multiple pages. I did not record that.
- I started to keep track of the types of tools, but after a while it became tedious and also unnecessary. Most of the instances were drivers, soft-face hammer tips, or hacksaw handles.
- I populated an Excel file with the data (I "smoodged" the dates + or - 1 year if they were an even year for fit) and sorted it A-Z.
- Lastly, I assigned colors to each plastic because it was easier to 'see' the data than reading it. The colors have nothing to do with the color of the plastic. They all came in several colors, mainly amber, red, green, and black, with additives, but also translucent. Do not misconstrue the pale yellow as amber, etc. I mnemonically picked Teal for Tenite, Pink for Pyralin, and Chartreuse for any combination of C/A/B.