| Brain-scan letters |
| African country whose flag is nearly identical to Romania's |
| Archaeologist's letters |
| All, e.g., for this answer's last six letters? |
| Organizations with Greek letters |
| Adult-contemperary music of the late '70s and early '80s |
| Early kind of prison |
| Confusing statements ... and a hint to the circled letters |
| A learning method |
| Attend a party uninvited ... and a literal hint to five sets of circled letters |
| Terminated early, as a spaceflight |
| Accompaniers of cover letters: Abbr. |
| Surprises unpleasantly, and a hint to each starred answer's first two + last two letters |
| ___ Accidentally Leaks Results of 2008 Election Early" ("The Onion" headline) |
| Early Irish nobleman |
| Letters from the family? |
| Bounced-check letters |
| Adjust space between letters, in printing |
| Early missile launcher |
| Able to think clearly |
| Early computer printer speed meas. |
| Retirement plan letters |
| Whatever it takes ... as hinted at in the arrangements of black squares around the circled letters |
| Personal letters |
| ICU instruction letters |
| Early concert halls |
| Letters preceding an assumed name |
| Marvel Comics superhero wielding a nearly indestructible shield |
| Very nearly |
| Artistic place for tiny letters? |