Williams Stillwell Carman's earned his place in immortality by writing a series of "books" which outlined all the genealogical data he could put together after the great Carman Family Reunion in Hempstead in 1881.  Much of the information in this books were collected from first hand interviews with descendants who were in attendance at the reunion.  Collectively they are know as the Genealogical  Journals of William Stillwell Carman and the originals still exist and are in the collection of the New York city Public Library.  The books, all handwritten, consist of the following "books":

These are not the easiest to read at times. They are getting old and the ink is fading and they are all in pen and ink.  Over the years people who have come into the library have written comments and crossed out information when they think Stillwell is wrong - something you have to be careful off if you are working with 3rd of 4th generation photocopies because you will not be able to see the difference all the time from Stillwell's pen and ink to the comments of the anonymous critics.

Not all in Stillwell's handwriting. Book 14 on Elijah Carman is in the handwriting of Ezra Ayres Carman, perhaps because this is Stillwell's own family line and he either didn't finish it or preferred someone to write his book besides himself (the book records the death date of William Stillwell Carman so it was not completed at the time of his death - 1895, so the books carry a later date than most people think as well, the general thought being Stillwell got his information from personal interviews at the Carman Grand Reunion in Hempstead in 1881).

An example of what the Journals look like can be seen here