Mark Borckardt writes:

Tony Terranova agrees:

..as does George Cuhaj, who writes:

Len Augsburger of the Newman Numismatic Portal writes:

Thanks to all who responded to my question, especially Pete Smith who submitted the all important Clarke brochure and the Green letter.

I was able to send the Green letter and Clarke box electronically to a handwriting expert who was pretty certain that they did not match, though the sample size was too small to be definitive. She was quite insistent on the need of a much larger sample. I even tried to contact his alma mater, Fordham University, for any of his writings, but have yet to hear back.

I pulled this Eric Newman envelope from the Newman Portal and it doesn't seem to match very well to the box handwriting, though I haven't had it professionally analyzed. If there is a better handwritten note out there, that might be helpful.

Another knowledgeable collector speculated that Eric Newman's secretary may have written on the boxes as well. Any information or writing of hers would be appreciated as well.

Though the style of the Newcomer cardboard boxes appears quite similar, these colonial boxes are all typewritten making me wonder if he typed all of his coin boxes. In addition, I have not been able to find any example of Newcomers handwriting, making this connection very difficult. If there is a handwritten Newcomer letter or a written coin box out there, I would love to see it.

So, if anyone out there has any copies of Green's, Newman's, Newcomer's or Newman's secretary handwriting it would be greatly appreciated.

Thank you everyone for your input. With your help, this mystery might just be solved.

Len adds:

Bob adds:

To read the earlier E-Sylum articles, see:
THOMAS JAMES CLARKE (1875-1952)(https://www.coinbooks.org/v22/esylum_v22n37a17.html)
NOTES FROM E-SYLUM READERS: MAY 28, 2023 : Bechtler $5 Wooden Box Owner Sought(https://www.coinbooks.org/v26/esylum_v26n22a14.html)