Documentary Printed Cancels: Is the C.E.C. Found on Half Cent Gray Documentaries a Charles E. Cornell Printed Cancel?

Yesterday I posted stamps canceled by Dr. Fahrney & Son, a proprietary medicine company based in Maryland.  Dr. Fahrney used printed cancels on the 5/8c proprietary and 1/2c documentaries.  Today is presented Charles E. Cornell, who used printed cancels on the 5/8c proprietary, and, if the initials are any indication, on the 1/2c documentary as well.  Additional confirmation is needed for the 1/2c documentaries, as all we have is a match with the initials, C.E.C., though not the type font.  Courtesy of Frank Sente, we have multiple examples of the 1/2c documentary.

Based in New York, Charles E. Cornell made a variety of soaps and skin products.  

C.  E.  C.

August,   1899

Langlois scan, ex-Tolman

Below are three examples of 1/2c documentaries with August 6 1900 dates and C. E. C. printed cancels.  Are these by Charles E. Cornell?:

C.  E.  C.

Aug.  6th  1900

Langlois scan

C.  E.  C.

Aug.  6th  1900

Sente scan

C.  E.  C.

Aug  6th  1900

Sente scan

Sometime ago, Frank Sente sent the stamp above with an off-center C.E.C. cancel that includes perpendicular to the stamp printed letters at the upper right.  He offered the following comments in an email:  

"I have a gray 1/2 cent documentary with what I believe is a printed cancel that also bears some extraneous printing on it. I always figured it had been placed on the document BEFORE it was printed and picked up some of the printing either because it wasn't properly placed on the document to begin with, or the printing went a bit askew.  Look at the upper right corner of the right of the R162, 1/2 cent just above. See the extraneous lettering? Another stamp with presumably printed C. E. C.cancel is provided for comparison. Puzzling n'est-ce pas??