With all due respect and no offense toward the OP:
There are enough inaccuracies in that piece that it should be removed from the web.
The Western Electric 555 Receiver was a wood horn?
The original 601 duplex was 12 inch?
I couldn't read on any further.
Stick with the time line at Lansing Heritage. The folks that put that together actually knew what they were talking about and were proud enough of their work to proof read it and check it for accuracy.
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