That's because spelling standards hadn't been established yet. They didn't even have their Effs (ff) and Esses (ss) figured out yet.
Spelling is merely convention agreed on by English teachers to have power over students.
True, but it depends on whether those "English teachers" are teaching "The Kings English" or "American English".
Then there's the issue of the power-texting millennial-morons, who couldn't spell their way out of a wet paper bag.
Well, in battle, take the high ground
Spelling is optional