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My grandfather was a commercial artist, active in the business from the early 1930s until his death in 1981.
I watched him do logos and graphics for a variety of clients (including Nalge, which makes those Nalgene bottles that are popular among hikers), and as often as not, the lettering he did was done by hand, especially for logos. Learning to letter was an important part of his education back then.
This is also why there's no true "Group W font" available from any of the type foundries. It was a (very) custom job done for the company in the early 1960s, and wasn't available to anyone else, so far as I know. The same was true of the Westinghouse corporate typeface. I don't know who did the typeface, but the W-and-dots logo for the corporation was a Paul Rand job, I believe.