Here are the possible solutions for first and youngest 1927 clue
Answer
Clue
Relevancy
charleslindbergh
Clue
First and youngest (1927)
hardyboys
Clue
Fictional young male detectives who first appeared in a 1927 book credited to the pen name Franklin W Dixon: 2 wds.
levine
Clue
First trans-Atlantic air passenger, 1927.
fun
Clue
First word across in the first-ever crossword (1913) and the first of a dozen appearances of the word in this puzzle's grid, written word search-style (left, right, down, and diagonally) ... Can you f