Here are the possible solutions for hawaii and alaska in 1958 abbr clue
Answer
Clue
Relevancy
errs
Clue
Hawaii and Alaska in 1958: Abbr.
Definition
ERR, to make a mistake
ters
Clue
Alaska and Hawaii, once: Abbr.
usmap
Clue
Hawaii and Alaska are usually inserts on one: Abbr.
areacodes
Clue
907 and 808, for Alaska and Hawaii
Alaska, Delaware, Hawaii, Idaho, Maine, Montana, New Hampshire, North Dakota, Rhode Island, South Dakota, Vermont, and Wyoming each have just one of them