First appearance of hyphenated prewar card sets in catalogs and the market?

[Spike]

I'm researching W515-1 and W515-2 sets, which picked up those hyphenated differences sometime well after Burdick first assigned W515 in the ACC.

The ACC provided a long list of categories and subcategories that led to the majority of today's N/T/E/W/R card categories (N172, T206, E120, W516, etc.). In the decades since its 1960 edition, many hyphenated subsets have entered the collecting market. Does anyone know when these dashed subcategories first appeared? Most of the time, they distinguish checklist or subtle design differences within things that otherwise seem similar.

For all the sets I've looked at over the years, I can't remember the first time they showed hyphens. Where they part of one of the 70s/80s catalogs that followed ACC?