The most common and most likely answer to this crossword clue is the 9 letter word AMERICANA
I've seen this crossword clue in Financial Times
A
M
E
R
I
C
A
N
A
More clues leading to the result AMERICANA
- Literary collection about Maine, Rhode Island and California?
- Maybe pictures of New York in a camera needing to be developed
- Stuff from US in a camera needs developing
- States things in camera, upsetting authoritarian leader
- Ace airman moving stuff from the US
- States things are breaking in camera shot
- Yank collection of kids away from maniac – risked a beating
- Cinema area sadly missing a trace of England – Hollywood stuff, say
- Two articles on a married man in US collection
- Screamer I can ask to cover US songs
Buddy explains!

The straight part
We know that "Yank collection" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case yank collection = americana.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.