### Clue: Feature of Oxford quiet dons in the morning, working alone (9)
### Answer: ASHMOLEAN 
 ### Explanation: Definition: Feature of Oxford
 SH(an interjection requesting for quiet) **contained in**(dons) AM(abbrev. for "ante meridiem";before noontime) + **anagram of**(working)ALONE.
Answer: … Museum, attached to Oxford University.