[GreenKeys] A Little More TWX History

[Jim Haynes]

On Wed, 27 Nov 2019, Richard Knoppow wrote:

>   The Hogan who was active with the IRE was probably John V.L.Hogan, who was

Yes, that's who I mean.  Believe it was his son who was in the fax 
business, the company or product name was Hogan Faximile.

Catechol as I recall.  I see by the web that it is toxic, irritant and a
health hazard, points emphasized by Alden who claimed his sepia product
had none of those properties.

If you search for catechol and facsimile a lot of stuff comes up.