OK, I can’t believe I am already doing this all over again, but now instead of John Wayne it is John Kennedy. 

I am hoping for some of the great objective expertise from the John Wayne study I posted a couple weeks ago.  Anyway, here is the JFK case study.  Refer to the letter and close up signature below.

In 1965 Charles Hamilton wrote the most extensive case study ever produced for John Kennedy’s genuine, autopen and secretarial signatures, “The Robot that Helped to Make a President”.  
Now using Hamilton’s analysis and the letters below I have conclude this is a genuine JFK signed letter for the following reasons.

1). Hamilton concluded JFK did not start to depend on secretarials until after 1953.
2). The first known documented secretarial was 1952 (secretary IV page 31 of Hamilton's book). This letter is 1951
3). None of the secretarials on pages 22-31 are a match for this letter signature
4). Robot was first seen in 1958
5). The signature is a match as Authentic  . see pages 45-46
6). Kennedy’s secretaries may appear skilled but they all made glaring mistakes somewhere within their “work”.
 - Note the secretarial “J”’s are over flamboyant with High hoods and crossovers compared to his genuine during this time period (1951)
 - The “ohn” is way out of whack in height and width compared to his genuine where “ohn” is always lower then the “J”.
 -  The “K” often throughout his later life was a circular loop like here, see pages 41, 50,
 - The break after the last “n” is quite consistent during the early 50’s. The secretaries really screwed that up consistently , see page 31.
 - During the early 50’s his genuine examples still displayed a recognizable “e" after the last n.  Then the “d” would look like the first part of the “y” which it actually wasn’t.  The “y” would just drop off very low after the “d”.  See page 46.

  - ** NOTE: Key indicator - watch the Transition from the 1950 genuine example to the 1952 example in the first Hamilton "Genuine" example image below.  Note how the "d" in Kennedy was more pronounced as he came off 1950-51, then began to dissolve into 1952-53.

 There are several other variables, but didn't want to ramble on forever.

What do you guys think?