Article recording introduction from historian supports collections of letters (9)
I believe the answer is:
alphabets
'collections of letters' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
I also know that 'letters' relates to this answer.
'article recording introduction from historian supports' is the wordplay.
'article recording' becomes 'alp' (I am not sure about this - if you are sure you should believe this answer much more).
'introduction from' says to take the initial letters.
'supports' becomes 'abets' (I've seen this in another clue).
The first letter of 'historian' is 'h'.
'alp'+'h'+'abets'='ALPHABETS'
Can you help me to learn more?
(Another definition for alphabets that I've seen is " Complete sets of letters".)