TOS things you might have wondered about - where does Spock's supposedly unpronouncable family name come from?
It's from the first fanzine Spockanalia 2, page 10 (published April 19, 1968)

Written by Dorothy Fontana(!) in a correspondence answering some Spock questions.
Canon or not canon?
Officially, only the TV series and the movies, i.e all that made it to the big screen, is canon. And a few of the TAS episodes, like the one where Spock aka Selek saves himself.
Spockanalia (1-5) are not canon, just as Dorothy Fontana's pro-novel is not canon - OTOH it's as close to THE SOURCE as anything non-canon can be, IMVHO :) Take that as you will.
It's from the first fanzine Spockanalia 2, page 10 (published April 19, 1968)

Written by Dorothy Fontana(!) in a correspondence answering some Spock questions.
Canon or not canon?
Officially, only the TV series and the movies, i.e all that made it to the big screen, is canon. And a few of the TAS episodes, like the one where Spock aka Selek saves himself.
Spockanalia (1-5) are not canon, just as Dorothy Fontana's pro-novel is not canon - OTOH it's as close to THE SOURCE as anything non-canon can be, IMVHO :) Take that as you will.